61139000364 has 48 divisors (see below), whose sum is σ = 153661390848. Its totient is φ = 18808319808.

The previous prime is 61139000309. The next prime is 61139000387. The reversal of 61139000364 is 46300093116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823509 + ... + 894675.

It is an arithmetic number, because the mean of its divisors is an integer number (3201278976).

Almost surely, 2^61139000364 is an apocalyptic number.

61139000364 is the 132168-th nonagonal number.

It is an amenable number.

61139000364 is an abundant number, since it is smaller than the sum of its proper divisors (92522390484).

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

61139000364 is a wasteful number, since it uses less digits than its factorization.

61139000364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76694 (or 76692 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 61139000364 in words is "sixty-one billion, one hundred thirty-nine million, three hundred sixty-four", and thus it is an aban number.