61115015166 has 16 divisors (see below), whose sum is σ = 125211251088. Its totient is φ = 19874801600.

The previous prime is 61115015141. The next prime is 61115015183. The reversal of 61115015166 is 66151051116.

It is a congruent number.

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, 124217265 + ... + 124217756.

It is an arithmetic number, because the mean of its divisors is an integer number (7825703193).

Almost surely, 2^61115015166 is an apocalyptic number.

61115015166 is an abundant number, since it is smaller than the sum of its proper divisors (64096235922).

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

61115015166 is a wasteful number, since it uses less digits than its factorization.

61115015166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248435067.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 61115015166 in words is "sixty-one billion, one hundred fifteen million, fifteen thousand, one hundred sixty-six".