61686014156 has 48 divisors (see below), whose sum is σ = 129571515360. Its totient is φ = 25385425920.

The previous prime is 61686014119. The next prime is 61686014183. The reversal of 61686014156 is 65141068616.

61686014156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819535 + ... + 1853126.

It is an arithmetic number, because the mean of its divisors is an integer number (2699406570).

Almost surely, 2^61686014156 is an apocalyptic number.

It is an amenable number.

61686014156 is an abundant number, since it is smaller than the sum of its proper divisors (67885501204).

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

61686014156 is a wasteful number, since it uses less digits than its factorization.

61686014156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672714 (or 3672712 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 61686014156 in words is "sixty-one billion, six hundred eighty-six million, fourteen thousand, one hundred fifty-six".