61396156136 has 16 divisors (see below), whose sum is σ = 131563191840. Its totient is φ = 26312638320.

The previous prime is 61396156097. The next prime is 61396156163. The reversal of 61396156136 is 63165169316.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548179910 + ... + 548180021.

It is an arithmetic number, because the mean of its divisors is an integer number (8222699490).

Almost surely, 2^61396156136 is an apocalyptic number.

It is an amenable number.

61396156136 is an abundant number, since it is smaller than the sum of its proper divisors (70167035704).

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

61396156136 is a wasteful number, since it uses less digits than its factorization.

61396156136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096359944 (or 1096359940 counting only the distinct ones).

The product of its digits is 524880, while the sum is 47.

The spelling of 61396156136 in words is "sixty-one billion, three hundred ninety-six million, one hundred fifty-six thousand, one hundred thirty-six".