61904585886 has 64 divisors (see below), whose sum is σ = 145519186176. Its totient is φ = 17308224000.

The previous prime is 61904585861. The next prime is 61904585923. The reversal of 61904585886 is 68858540916.

61904585886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2058861 + ... + 2088711.

It is an arithmetic number, because the mean of its divisors is an integer number (2273737284).

Almost surely, 2^61904585886 is an apocalyptic number.

61904585886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61904585886 is an abundant number, since it is smaller than the sum of its proper divisors (83614600290).

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

61904585886 is a wasteful number, since it uses less digits than its factorization.

61904585886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32297.

The product of its (nonzero) digits is 16588800, while the sum is 60.

The spelling of 61904585886 in words is "sixty-one billion, nine hundred four million, five hundred eighty-five thousand, eight hundred eighty-six".