78480747700 has 18 divisors (see below), whose sum is σ = 170303222726. Its totient is φ = 31392299040.

The previous prime is 78480747679. The next prime is 78480747703. The reversal of 78480747700 is 774708487.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 682149924 + 77798597776 = 26118^2 + 278924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78480747703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392403639 + ... + 392403838.

Almost surely, 2^78480747700 is an apocalyptic number.

It is an amenable number.

78480747700 is an abundant number, since it is smaller than the sum of its proper divisors (91822475026).

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

78480747700 is a wasteful number, since it uses less digits than its factorization.

78480747700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784807491 (or 784807484 counting only the distinct ones).

The product of its (nonzero) digits is 2458624, while the sum is 52.

The spelling of 78480747700 in words is "seventy-eight billion, four hundred eighty million, seven hundred forty-seven thousand, seven hundred".