65056404522561 has 32 divisors (see below), whose sum is σ = 88915688644608. Its totient is φ = 42285418834560.

The previous prime is 65056404522443. The next prime is 65056404522611. The reversal of 65056404522561 is 16522540465056.

It is not a de Polignac number, because 65056404522561 - 2⁹ = 65056404522049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65056404522061) 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, 3786082576 + ... + 3786099758.

It is an arithmetic number, because the mean of its divisors is an integer number (2778615270144).

Almost surely, 2^{65056404522561} is an apocalyptic number.

It is an amenable number.

65056404522561 is a deficient number, since it is larger than the sum of its proper divisors (23859284122047).

65056404522561 is a wasteful number, since it uses less digits than its factorization.

65056404522561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35581.

The product of its (nonzero) digits is 8640000, while the sum is 51.

The spelling of 65056404522561 in words is "sixty-five trillion, fifty-six billion, four hundred four million, five hundred twenty-two thousand, five hundred sixty-one".