78437313660 has 24 divisors (see below), whose sum is σ = 219624478416. Its totient is φ = 20916616960.

The previous prime is 78437313631. The next prime is 78437313707. The reversal of 78437313660 is 6631373487.

It is a congruent number.

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, 653644221 + ... + 653644340.

It is an arithmetic number, because the mean of its divisors is an integer number (9151019934).

Almost surely, 2^78437313660 is an apocalyptic number.

It is an amenable number.

78437313660 is an abundant number, since it is smaller than the sum of its proper divisors (141187164756).

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

78437313660 is a wasteful number, since it uses less digits than its factorization.

78437313660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307288573 (or 1307288571 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 78437313660 in words is "seventy-eight billion, four hundred thirty-seven million, three hundred thirteen thousand, six hundred sixty".