78745224940 has 12 divisors (see below), whose sum is σ = 165364972416. Its totient is φ = 31498089968.

The previous prime is 78745224893. The next prime is 78745224977. The reversal of 78745224940 is 4942254787.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968630604 + ... + 1968630643.

It is an arithmetic number, because the mean of its divisors is an integer number (13780414368).

Almost surely, 2^78745224940 is an apocalyptic number.

It is an amenable number.

78745224940 is an abundant number, since it is smaller than the sum of its proper divisors (86619747476).

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

78745224940 is a wasteful number, since it uses less digits than its factorization.

78745224940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937261256 (or 3937261254 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 78745224940 in words is "seventy-eight billion, seven hundred forty-five million, two hundred twenty-four thousand, nine hundred forty".