61264236205165 has 16 divisors (see below), whose sum is σ = 84023015581440. Its totient is φ = 42008016147840.

The previous prime is 61264236205153. The next prime is 61264236205171. The reversal of 61264236205165 is 56150263246216.

It is not a de Polignac number, because 61264236205165 - 2⁷ = 61264236205037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35516760 + ... + 37201729.

It is an arithmetic number, because the mean of its divisors is an integer number (5251438473840).

Almost surely, 2^{61264236205165} is an apocalyptic number.

It is an amenable number.

61264236205165 is a deficient number, since it is larger than the sum of its proper divisors (22758779376275).

61264236205165 is a wasteful number, since it uses less digits than its factorization.

61264236205165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72742572.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 61264236205165 in words is "sixty-one trillion, two hundred sixty-four billion, two hundred thirty-six million, two hundred five thousand, one hundred sixty-five".