78625990500 has 48 divisors (see below), whose sum is σ = 228958888704. Its totient is φ = 20966930400.

The previous prime is 78625990483. The next prime is 78625990519. The reversal of 78625990500 is 509952687.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 26207164 + ... + 26210163.

It is an arithmetic number, because the mean of its divisors is an integer number (4769976848).

Almost surely, 2^78625990500 is an apocalyptic number.

It is an amenable number.

78625990500 is an abundant number, since it is smaller than the sum of its proper divisors (150332898204).

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

78625990500 is a wasteful number, since it uses less digits than its factorization.

78625990500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52417349 (or 52417337 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 78625990500 in words is "seventy-eight billion, six hundred twenty-five million, nine hundred ninety thousand, five hundred".