61534564232215 has 32 divisors (see below), whose sum is σ = 75076561244160. Its totient is φ = 48409385356800.

The previous prime is 61534564232213. The next prime is 61534564232227. The reversal of 61534564232215 is 51223246543516.

It is not a de Polignac number, because 61534564232215 - 2¹ = 61534564232213 is a prime.

It is a super-2 number, since 2×61534564232215² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534564232213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333995352 + ... + 334179538.

It is an arithmetic number, because the mean of its divisors is an integer number (2346142538880).

Almost surely, 2^{61534564232215} is an apocalyptic number.

61534564232215 is a deficient number, since it is larger than the sum of its proper divisors (13541997011945).

61534564232215 is a wasteful number, since it uses less digits than its factorization.

61534564232215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187663.

The product of its digits is 5184000, while the sum is 49.

The spelling of 61534564232215 in words is "sixty-one trillion, five hundred thirty-four billion, five hundred sixty-four million, two hundred thirty-two thousand, two hundred fifteen".