72158015008 has 12 divisors (see below), whose sum is σ = 142061092110. Its totient is φ = 36079007488.

The previous prime is 72158014969. The next prime is 72158015047. The reversal of 72158015008 is 80051085127.

It is an interprime number because it is at equal distance from previous prime (72158014969) and next prime (72158015047).

It can be written as a sum of positive squares in only one way, i.e., 61636999824 + 10521015184 = 248268^2 + 102572^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127468953 + ... + 1127469016.

Almost surely, 2^72158015008 is an apocalyptic number.

It is an amenable number.

72158015008 is a deficient number, since it is larger than the sum of its proper divisors (69903077102).

72158015008 is a wasteful number, since it uses less digits than its factorization.

72158015008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254937979 (or 2254937971 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 37.

The spelling of 72158015008 in words is "seventy-two billion, one hundred fifty-eight million, fifteen thousand, eight".