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69893930961 = 327765992329
BaseRepresentation
bin100000100011000000…
…0001011111111010001
320200102000202120111200
41001012000023333101
52121120321242321
652035301301413
75023015416321
oct1010600137721
9220360676450
1069893930961
1127707335908
1211667404869
13678b48a5ca
1435508c5281
151c4115cd26
hex104600bfd1

69893930961 has 6 divisors (see below), whose sum is σ = 100957900290. Its totient is φ = 46595953968.

The previous prime is 69893930959. The next prime is 69893930983. The reversal of 69893930961 is 16903939896.

It can be written as a sum of positive squares in only one way, i.e., 65753780625 + 4140150336 = 256425^2 + 64344^2 .

It is not a de Polignac number, because 69893930961 - 21 = 69893930959 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69893930261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3882996156 + ... + 3882996173.

It is an arithmetic number, because the mean of its divisors is an integer number (16826316715).

Almost surely, 269893930961 is an apocalyptic number.

It is an amenable number.

69893930961 is a deficient number, since it is larger than the sum of its proper divisors (31063969329).

69893930961 is a wasteful number, since it uses less digits than its factorization.

69893930961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765992335 (or 7765992332 counting only the distinct ones).

The product of its (nonzero) digits is 17006112, while the sum is 63.

The spelling of 69893930961 in words is "sixty-nine billion, eight hundred ninety-three million, nine hundred thirty thousand, nine hundred sixty-one".

Divisors: 1 3 9 7765992329 23297976987 69893930961