715158723021 has 32 divisors (see below), whose sum is σ = 983737294848. Its totient is φ = 461905916160.

The previous prime is 715158723017. The next prime is 715158723047. The reversal of 715158723021 is 120327851517.

It is not a de Polignac number, because 715158723021 - 2² = 715158723017 is a prime.

It is a super-2 number, since 2×715158723021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715158723001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5611816 + ... + 5737838.

It is an arithmetic number, because the mean of its divisors is an integer number (30741790464).

Almost surely, 2^715158723021 is an apocalyptic number.

It is an amenable number.

715158723021 is a deficient number, since it is larger than the sum of its proper divisors (268578571827).

715158723021 is a wasteful number, since it uses less digits than its factorization.

715158723021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126481.

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 715158723021 in words is "seven hundred fifteen billion, one hundred fifty-eight million, seven hundred twenty-three thousand, twenty-one".