61172502657115 has 16 divisors (see below), whose sum is σ = 73832497351776. Its totient is φ = 48654348364800.

The previous prime is 61172502657113. The next prime is 61172502657143. The reversal of 61172502657115 is 51175620527116.

It is not a de Polignac number, because 61172502657115 - 2¹ = 61172502657113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61172502657113) 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, 57183700 + ... + 58243630.

It is an arithmetic number, because the mean of its divisors is an integer number (4614531084486).

Almost surely, 2^{61172502657115} is an apocalyptic number.

61172502657115 is a deficient number, since it is larger than the sum of its proper divisors (12659994694661).

61172502657115 is a wasteful number, since it uses less digits than its factorization.

61172502657115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126830.

The product of its (nonzero) digits is 882000, while the sum is 49.

The spelling of 61172502657115 in words is "sixty-one trillion, one hundred seventy-two billion, five hundred two million, six hundred fifty-seven thousand, one hundred fifteen".