78297223560 has 64 divisors (see below), whose sum is σ = 234915742080. Its totient is φ = 20877120000.

The previous prime is 78297223513. The next prime is 78297223573. The reversal of 78297223560 is 6532279287.

It is a super-2 number, since 2×78297223560² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396060 + ... + 1451060.

It is an arithmetic number, because the mean of its divisors is an integer number (3670558470).

Almost surely, 2^78297223560 is an apocalyptic number.

It is an amenable number.

78297223560 is an abundant number, since it is smaller than the sum of its proper divisors (156618518520).

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

78297223560 is a wasteful number, since it uses less digits than its factorization.

78297223560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66878 (or 66874 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 78297223560 in words is "seventy-eight billion, two hundred ninety-seven million, two hundred twenty-three thousand, five hundred sixty".