78072470028 has 96 divisors (see below), whose sum is σ = 233014656000. Its totient is φ = 22143570048.

The previous prime is 78072469987. The next prime is 78072470033. The reversal of 78072470028 is 82007427087.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273328 + ... + 480471.

It is an arithmetic number, because the mean of its divisors is an integer number (2427236000).

Almost surely, 2^78072470028 is an apocalyptic number.

It is an amenable number.

78072470028 is an abundant number, since it is smaller than the sum of its proper divisors (154942185972).

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

78072470028 is a wasteful number, since it uses less digits than its factorization.

78072470028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753956 (or 753948 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The spelling of 78072470028 in words is "seventy-eight billion, seventy-two million, four hundred seventy thousand, twenty-eight".