71320715557056 has 336 divisors, whose sum is σ = 253861546997760. Its totient is φ = 18682117447680.

The previous prime is 71320715557051. The next prime is 71320715557081. The reversal of 71320715557056 is 65075551702317.

71320715557056 is a `hidden beast` number, since 7 + 1 + 3 + 2 + 0 + 7 + 15 + 5 + 570 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a junction number, because it is equal to n+sod(n) for n = 71320715556993 and 71320715557011.

It is not an unprimeable number, because it can be changed into a prime (71320715557051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12641001 + ... + 17390696.

Almost surely, 2^{71320715557056} is an apocalyptic number.

71320715557056 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

71320715557056 is an abundant number, since it is smaller than the sum of its proper divisors (182540831440704).

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

71320715557056 is a wasteful number, since it uses less digits than its factorization.

71320715557056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30031772 (or 30031759 counting only the distinct ones).

The product of its (nonzero) digits is 7717500, while the sum is 54.

The spelling of 71320715557056 in words is "seventy-one trillion, three hundred twenty billion, seven hundred fifteen million, five hundred fifty-seven thousand, fifty-six".