78748124900 has 36 divisors (see below), whose sum is σ = 175501910388. Its totient is φ = 30647917440.

The previous prime is 78748124867. The next prime is 78748124927. The reversal of 78748124900 is 942184787.

It can be written as a sum of positive squares in 6 ways, for example, as 6920908864 + 71827216036 = 83192^2 + 268006^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10637939 + ... + 10645338.

Almost surely, 2^78748124900 is an apocalyptic number.

It is an amenable number.

78748124900 is an abundant number, since it is smaller than the sum of its proper divisors (96753785488).

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

78748124900 is a wasteful number, since it uses less digits than its factorization.

78748124900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283328 (or 21283321 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 78748124900 in words is "seventy-eight billion, seven hundred forty-eight million, one hundred twenty-four thousand, nine hundred".