61331930135180 has 24 divisors (see below), whose sum is σ = 130000764066768. Its totient is φ = 24303493809728.

The previous prime is 61331930135167. The next prime is 61331930135209. The reversal of 61331930135180 is 8153103913316.

It is a super-2 number, since 2×61331930135180² (a number of 28 digits) contains 22 as substring.

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, 14329888079 + ... + 14329892358.

It is an arithmetic number, because the mean of its divisors is an integer number (5416698502782).

Almost surely, 2^{61331930135180} is an apocalyptic number.

It is an amenable number.

61331930135180 is an abundant number, since it is smaller than the sum of its proper divisors (68668833931588).

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

61331930135180 is a wasteful number, since it uses less digits than its factorization.

61331930135180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28659780553 (or 28659780551 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 61331930135180 in words is "sixty-one trillion, three hundred thirty-one billion, nine hundred thirty million, one hundred thirty-five thousand, one hundred eighty".