78813032502 has 16 divisors (see below), whose sum is σ = 157629007872. Its totient is φ = 26270520360.

The previous prime is 78813032489. The next prime is 78813032537. The reversal of 78813032502 is 20523031887.

It is a super-2 number, since 2×78813032502² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 391083 + ... + 557289.

It is an arithmetic number, because the mean of its divisors is an integer number (9851812992).

Almost surely, 2^78813032502 is an apocalyptic number.

78813032502 is an abundant number, since it is smaller than the sum of its proper divisors (78815975370).

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

78813032502 is a wasteful number, since it uses less digits than its factorization.

78813032502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245243.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 78813032502 in words is "seventy-eight billion, eight hundred thirteen million, thirty-two thousand, five hundred two".