61513665122136 has 64 divisors (see below), whose sum is σ = 156480682924800. Its totient is φ = 20146592492928.

The previous prime is 61513665122053. The next prime is 61513665122159. The reversal of 61513665122136 is 63122156631516.

61513665122136 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48545140 + ... + 49796163.

It is an arithmetic number, because the mean of its divisors is an integer number (2445010670700).

Almost surely, 2^{61513665122136} is an apocalyptic number.

It is an amenable number.

61513665122136 is an abundant number, since it is smaller than the sum of its proper divisors (94967017802664).

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

61513665122136 is a wasteful number, since it uses less digits than its factorization.

61513665122136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98341768 (or 98341764 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The spelling of 61513665122136 in words is "sixty-one trillion, five hundred thirteen billion, six hundred sixty-five million, one hundred twenty-two thousand, one hundred thirty-six".