80723715738 has 32 divisors (see below), whose sum is σ = 163503334080. Its totient is φ = 26566151040.

The previous prime is 80723715727. The next prime is 80723715791. The reversal of 80723715738 is 83751732708.

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, 249873 + ... + 473163.

It is an arithmetic number, because the mean of its divisors is an integer number (5109479190).

Almost surely, 2^80723715738 is an apocalyptic number.

80723715738 is an abundant number, since it is smaller than the sum of its proper divisors (82779618342).

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

80723715738 is a wasteful number, since it uses less digits than its factorization.

80723715738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224062.

The product of its (nonzero) digits is 1975680, while the sum is 51.

The spelling of 80723715738 in words is "eighty billion, seven hundred twenty-three million, seven hundred fifteen thousand, seven hundred thirty-eight".