61107135712 has 24 divisors (see below), whose sum is σ = 137491055856. Its totient is φ = 26188772352.

The previous prime is 61107135709. The next prime is 61107135721. The reversal of 61107135712 is 21753170116.

It is a happy number.

It is a congruent number.

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, 136399633 + ... + 136400080.

It is an arithmetic number, because the mean of its divisors is an integer number (5728793994).

Almost surely, 2^61107135712 is an apocalyptic number.

It is an amenable number.

61107135712 is an abundant number, since it is smaller than the sum of its proper divisors (76383920144).

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

61107135712 is a wasteful number, since it uses less digits than its factorization.

61107135712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272799730 (or 272799722 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 34.

The spelling of 61107135712 in words is "sixty-one billion, one hundred seven million, one hundred thirty-five thousand, seven hundred twelve".