78901001100 has 72 divisors (see below), whose sum is σ = 253652115920. Its totient is φ = 21040266240.

The previous prime is 78901001087. The next prime is 78901001117. The reversal of 78901001100 is 110010987.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14608597 + ... + 14613996.

Almost surely, 2^78901001100 is an apocalyptic number.

It is an amenable number.

78901001100 is an abundant number, since it is smaller than the sum of its proper divisors (174751114820).

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

78901001100 is a wasteful number, since it uses less digits than its factorization.

78901001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29222616 (or 29222603 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The spelling of 78901001100 in words is "seventy-eight billion, nine hundred one million, one thousand, one hundred".