61660110005065 has 64 divisors (see below), whose sum is σ = 94454677094400. Its totient is φ = 37950539385600.

The previous prime is 61660110005051. The next prime is 61660110005083. The reversal of 61660110005065 is 56050001106616.

It is not a de Polignac number, because 61660110005065 - 2¹⁷ = 61660109873993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72785925 + ... + 73628194.

It is an arithmetic number, because the mean of its divisors is an integer number (1475854329600).

Almost surely, 2^{61660110005065} is an apocalyptic number.

61660110005065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61660110005065 is a deficient number, since it is larger than the sum of its proper divisors (32794567089335).

61660110005065 is a wasteful number, since it uses less digits than its factorization.

61660110005065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146414198.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 61660110005065 in words is "sixty-one trillion, six hundred sixty billion, one hundred ten million, five thousand, sixty-five".