71206331136 has 72 divisors (see below), whose sum is σ = 191466622704. Its totient is φ = 23490723840.

The previous prime is 71206331129. The next prime is 71206331149. The reversal of 71206331136 is 63113360217.

It is a junction number, because it is equal to n+sod(n) for n = 71206331097 and 71206331106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403425 + ... + 552416.

Almost surely, 2^71206331136 is an apocalyptic number.

It is an amenable number.

71206331136 is an abundant number, since it is smaller than the sum of its proper divisors (120260291568).

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

71206331136 is an equidigital number, since it uses as much as digits as its factorization.

71206331136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955957 (or 955943 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The spelling of 71206331136 in words is "seventy-one billion, two hundred six million, three hundred thirty-one thousand, one hundred thirty-six".