61115717183916 has 24 divisors (see below), whose sum is σ = 142664099999680. Its totient is φ = 20363225741712.

The previous prime is 61115717183893. The next prime is 61115717183951. The reversal of 61115717183916 is 61938171751116.

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, 1084968946 + ... + 1085025273.

Almost surely, 2^{61115717183916} is an apocalyptic number.

It is an amenable number.

61115717183916 is an abundant number, since it is smaller than the sum of its proper divisors (81548382815764).

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

61115717183916 is a wasteful number, since it uses less digits than its factorization.

61115717183916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169996573 (or 2169996571 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 57.

The spelling of 61115717183916 in words is "sixty-one trillion, one hundred fifteen billion, seven hundred seventeen million, one hundred eighty-three thousand, nine hundred sixteen".