71307157156 has 81 divisors (see below), whose sum is σ = 132986691873. Its totient is φ = 33454019520.

The previous prime is 71307157151. The next prime is 71307157217. The reversal of 71307157156 is 65175170317.

The square root of 71307157156 is 267034.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 40477416100 + 30829741056 = 201190^2 + 175584^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71307157151) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 976810336 + ... + 976810408.

Almost surely, 2^71307157156 is an apocalyptic number.

71307157156 is the 267034-th square number.

It is an amenable number.

71307157156 is a deficient number, since it is larger than the sum of its proper divisors (61679534717).

71307157156 is an equidigital number, since it uses as much as digits as its factorization.

71307157156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 154350, while the sum is 43.

The spelling of 71307157156 in words is "seventy-one billion, three hundred seven million, one hundred fifty-seven thousand, one hundred fifty-six".