78529037408 has 24 divisors (see below), whose sum is σ = 162741098520. Its totient is φ = 37197964800.

The previous prime is 78529037407. The next prime is 78529037443. The reversal of 78529037408 is 80473092587.

It is a self number, because there is not a number n which added to its sum of digits gives 78529037408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78529037407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64579193 + ... + 64580408.

It is an arithmetic number, because the mean of its divisors is an integer number (6780879105).

Almost surely, 2^78529037408 is an apocalyptic number.

It is an amenable number.

78529037408 is an abundant number, since it is smaller than the sum of its proper divisors (84212061112).

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

78529037408 is a wasteful number, since it uses less digits than its factorization.

78529037408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129159630 (or 129159622 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 78529037408 in words is "seventy-eight billion, five hundred twenty-nine million, thirty-seven thousand, four hundred eight".