79987000528 has 80 divisors (see below), whose sum is σ = 162921715200. Its totient is φ = 37990149120.

The previous prime is 79987000487. The next prime is 79987000531. The reversal of 79987000528 is 82500078997.

79987000528 is a nontrivial binomial coefficient, being equal to C(399968, 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14596093 + ... + 14601571.

It is an arithmetic number, because the mean of its divisors is an integer number (2036521440).

Almost surely, 2^79987000528 is an apocalyptic number.

79987000528 is the 399967-th triangular number and also the 199984-th hexagonal number.

79987000528 is the 133323-rd centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79987000528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81460857600).

79987000528 is an abundant number, since it is smaller than the sum of its proper divisors (82934714672).

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

79987000528 is a wasteful number, since it uses less digits than its factorization.

79987000528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020 (or 6014 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 79987000528 in words is "seventy-nine billion, nine hundred eighty-seven million, five hundred twenty-eight", and thus it is an aban number.