65512571604 has 24 divisors (see below), whose sum is σ = 153548156160. Its totient is φ = 21739596864.

The previous prime is 65512571567. The next prime is 65512571609. The reversal of 65512571604 is 40617521556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65512571609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12238089 + ... + 12243440.

It is an arithmetic number, because the mean of its divisors is an integer number (6397839840).

Almost surely, 2^65512571604 is an apocalyptic number.

It is an amenable number.

65512571604 is an abundant number, since it is smaller than the sum of its proper divisors (88035584556).

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

65512571604 is a wasteful number, since it uses less digits than its factorization.

65512571604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24481759 (or 24481757 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 65512571604 in words is "sixty-five billion, five hundred twelve million, five hundred seventy-one thousand, six hundred four".