83172603528 has 72 divisors (see below), whose sum is σ = 262036147230. Its totient is φ = 23763600000.

The previous prime is 83172603517. The next prime is 83172603539. The reversal of 83172603528 is 82530627138.

83172603528 is a `hidden beast` number, since 8 + 3 + 17 + 2 + 603 + 5 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (83172603517) and next prime (83172603539).

It can be written as a sum of positive squares in only one way, i.e., 72050370084 + 11122233444 = 268422^2 + 105462^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11783973 + ... + 11791028.

Almost surely, 2^83172603528 is an apocalyptic number.

It is an amenable number.

83172603528 is an abundant number, since it is smaller than the sum of its proper divisors (178863543702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83172603528 is a wasteful number, since it uses less digits than its factorization.

83172603528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23575027 (or 23575013 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 83172603528 in words is "eighty-three billion, one hundred seventy-two million, six hundred three thousand, five hundred twenty-eight".