71157272258 has 54 divisors (see below), whose sum is σ = 114324014259. Its totient is φ = 33214246824.

The previous prime is 71157272243. The next prime is 71157272269. The reversal of 71157272258 is 85227275117.

It can be written as a sum of positive squares in only one way, i.e., 35578636129 + 35578636129 = 188623^2 + 188623^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188623.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 511922753 + ... + 511922891.

Almost surely, 2^71157272258 is an apocalyptic number.

71157272258 is a deficient number, since it is larger than the sum of its proper divisors (43166742001).

71157272258 is an equidigital number, since it uses as much as digits as its factorization.

71157272258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 223 counting only the distinct ones).

The product of its digits is 548800, while the sum is 47.

The spelling of 71157272258 in words is "seventy-one billion, one hundred fifty-seven million, two hundred seventy-two thousand, two hundred fifty-eight".