61961161188 has 24 divisors (see below), whose sum is σ = 144721081792. Its totient is φ = 20633000544.

The previous prime is 61961161187. The next prime is 61961161219. The reversal of 61961161188 is 88116116916.

61961161188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61961161187) 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, 2577520 + ... + 2601447.

Almost surely, 2^61961161188 is an apocalyptic number.

It is an amenable number.

61961161188 is an abundant number, since it is smaller than the sum of its proper divisors (82759920604).

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

61961161188 is a wasteful number, since it uses less digits than its factorization.

61961161188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179971 (or 5179969 counting only the distinct ones).

The product of its digits is 124416, while the sum is 48.

The spelling of 61961161188 in words is "sixty-one billion, nine hundred sixty-one million, one hundred sixty-one thousand, one hundred eighty-eight".