61040007104865 has 16 divisors (see below), whose sum is σ = 97890610012416. Its totient is φ = 32479137574400.

The previous prime is 61040007104863. The next prime is 61040007104911. The reversal of 61040007104865 is 56840170004016.

It is not a de Polignac number, because 61040007104865 - 2¹ = 61040007104863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61040007104863) 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, 4720798416 + ... + 4720811345.

It is an arithmetic number, because the mean of its divisors is an integer number (6118163125776).

Almost surely, 2^{61040007104865} is an apocalyptic number.

It is an amenable number.

61040007104865 is a deficient number, since it is larger than the sum of its proper divisors (36850602907551).

61040007104865 is a wasteful number, since it uses less digits than its factorization.

61040007104865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441610200.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 61040007104865 in words is "sixty-one trillion, forty billion, seven million, one hundred four thousand, eight hundred sixty-five".