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75048318421 = 294943523543
BaseRepresentation
bin100010111100100111…
…0100111010111010101
321011201020122120211221
41011321032213113111
52212144332142141
654250545530341
75264524116106
oct1057116472725
9234636576757
1075048318421
112991190145a
12126656439b1
1371002c310b
1438bd2943ad
151e4390dbd1
hex11793a75d5

75048318421 has 8 divisors (see below), whose sum is σ = 77652046080. Its totient is φ = 72445647792.

The previous prime is 75048318413. The next prime is 75048318493. The reversal of 75048318421 is 12481384057.

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

It is a cyclic number.

It is not a de Polignac number, because 75048318421 - 23 = 75048318413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75048378421) 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, 118425 + ... + 405118.

It is an arithmetic number, because the mean of its divisors is an integer number (9706505760).

Almost surely, 275048318421 is an apocalyptic number.

It is an amenable number.

75048318421 is a deficient number, since it is larger than the sum of its proper divisors (2603727659).

75048318421 is a wasteful number, since it uses less digits than its factorization.

75048318421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528515.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 75048318421 in words is "seventy-five billion, forty-eight million, three hundred eighteen thousand, four hundred twenty-one".

Divisors: 1 29 4943 143347 523543 15182747 2587873049 75048318421