61015418156 has 48 divisors (see below), whose sum is σ = 133143478272. Its totient is φ = 23768860800.

The previous prime is 61015418153. The next prime is 61015418179. The reversal of 61015418156 is 65181451016.

61015418156 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 (61015418153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4174421 + ... + 4189011.

It is an arithmetic number, because the mean of its divisors is an integer number (2773822464).

Almost surely, 2^61015418156 is an apocalyptic number.

It is an amenable number.

61015418156 is an abundant number, since it is smaller than the sum of its proper divisors (72128060116).

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

61015418156 is a wasteful number, since it uses less digits than its factorization.

61015418156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28190 (or 28188 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 61015418156 in words is "sixty-one billion, fifteen million, four hundred eighteen thousand, one hundred fifty-six".