61885194432940 has 24 divisors (see below), whose sum is σ = 132410963185200. Its totient is φ = 24287019701568.

The previous prime is 61885194432857. The next prime is 61885194432953. The reversal of 61885194432940 is 4923449158816.

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, 29191128390 + ... + 29191130509.

It is an arithmetic number, because the mean of its divisors is an integer number (5517123466050).

Almost surely, 2^{61885194432940} is an apocalyptic number.

It is an amenable number.

61885194432940 is an abundant number, since it is smaller than the sum of its proper divisors (70525768752260).

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

61885194432940 is a wasteful number, since it uses less digits than its factorization.

61885194432940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58382258961 (or 58382258959 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 64.

The spelling of 61885194432940 in words is "sixty-one trillion, eight hundred eighty-five billion, one hundred ninety-four million, four hundred thirty-two thousand, nine hundred forty".