65531472564 has 48 divisors (see below), whose sum is σ = 153602882496. Its totient is φ = 21744480000.

The previous prime is 65531472563. The next prime is 65531472607. The reversal of 65531472564 is 46527413556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65531472563) 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, 6431554 + ... + 6441734.

It is an arithmetic number, because the mean of its divisors is an integer number (3200060052).

Almost surely, 2^65531472564 is an apocalyptic number.

It is an amenable number.

65531472564 is an abundant number, since it is smaller than the sum of its proper divisors (88071409932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65531472564 is a wasteful number, since it uses less digits than its factorization.

65531472564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12576 (or 12574 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 48.

The spelling of 65531472564 in words is "sixty-five billion, five hundred thirty-one million, four hundred seventy-two thousand, five hundred sixty-four".