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384369373957 = 5211721428677
BaseRepresentation
bin1011001011111100011…
…00110011001100000101
31100202010100210022000011
411211332030303030011
522244142024431312
6452324333350221
736525013525462
oct5457614631405
91322110708004
10384369373957
11139012544738
12625b0638371
132a3272627aa
1414864302669
159ee9566da7
hex597e333305

384369373957 has 8 divisors (see below), whose sum is σ = 385331795352. Its totient is φ = 383407814400.

The previous prime is 384369373943. The next prime is 384369373981. The reversal of 384369373957 is 759373963483.

It can be written as a sum of positive squares in 4 ways, for example, as 179442043236 + 204927330721 = 423606^2 + 452689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-384369373957 is a prime.

It is a super-3 number, since 3×3843693739573 (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 384369373892 and 384369373901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384369373357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682303 + ... + 1110979.

It is an arithmetic number, because the mean of its divisors is an integer number (48166474419).

Almost surely, 2384369373957 is an apocalyptic number.

It is an amenable number.

384369373957 is a deficient number, since it is larger than the sum of its proper divisors (962421395).

384369373957 is a wasteful number, since it uses less digits than its factorization.

384369373957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430919.

The product of its digits is 308629440, while the sum is 67.

The spelling of 384369373957 in words is "three hundred eighty-four billion, three hundred sixty-nine million, three hundred seventy-three thousand, nine hundred fifty-seven".

Divisors: 1 521 1721 428677 896641 223340717 737753117 384369373957