61130291892 has 24 divisors (see below), whose sum is σ = 142641626400. Its totient is φ = 20376152736.

The previous prime is 61130291879. The next prime is 61130291899. The reversal of 61130291892 is 29819203116.

It is a super-2 number, since 2×61130291892² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61130291899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537834 + ... + 641502.

It is an arithmetic number, because the mean of its divisors is an integer number (5943401100).

Almost surely, 2^61130291892 is an apocalyptic number.

It is an amenable number.

61130291892 is an abundant number, since it is smaller than the sum of its proper divisors (81511334508).

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

61130291892 is a wasteful number, since it uses less digits than its factorization.

61130291892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152815 (or 152813 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 61130291892 in words is "sixty-one billion, one hundred thirty million, two hundred ninety-one thousand, eight hundred ninety-two".