78730900880 has 40 divisors (see below), whose sum is σ = 188954168064. Its totient is φ = 30476476800.

The previous prime is 78730900873. The next prime is 78730900903. The reversal of 78730900880 is 8800903787.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15870686 + ... + 15875645.

Almost surely, 2^78730900880 is an apocalyptic number.

It is an amenable number.

78730900880 is an abundant number, since it is smaller than the sum of its proper divisors (110223267184).

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

78730900880 is a wasteful number, since it uses less digits than its factorization.

78730900880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31746375 (or 31746369 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 78730900880 in words is "seventy-eight billion, seven hundred thirty million, nine hundred thousand, eight hundred eighty".