65561152665 has 32 divisors (see below), whose sum is σ = 107802930816. Its totient is φ = 33998814720.

The previous prime is 65561152661. The next prime is 65561152697. The reversal of 65561152665 is 56625116556.

It is not a de Polignac number, because 65561152665 - 2² = 65561152661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65561152661) 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, 834309 + ... + 909501.

It is an arithmetic number, because the mean of its divisors is an integer number (3368841588).

Almost surely, 2^65561152665 is an apocalyptic number.

It is an amenable number.

65561152665 is a deficient number, since it is larger than the sum of its proper divisors (42241778151).

65561152665 is a wasteful number, since it uses less digits than its factorization.

65561152665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76809.

The product of its digits is 1620000, while the sum is 48.

The spelling of 65561152665 in words is "sixty-five billion, five hundred sixty-one million, one hundred fifty-two thousand, six hundred sixty-five".