65456604672 has 160 divisors (see below), whose sum is σ = 176487370752. Its totient is φ = 21556813824.

The previous prime is 65456604649. The next prime is 65456604677. The reversal of 65456604672 is 27640665456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65456604677) 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, 59886558 + ... + 59887650.

Almost surely, 2^65456604672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65456604672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88243685376).

65456604672 is an abundant number, since it is smaller than the sum of its proper divisors (111030766080).

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

65456604672 is a wasteful number, since it uses less digits than its factorization.

65456604672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 65456604672 in words is "sixty-five billion, four hundred fifty-six million, six hundred four thousand, six hundred seventy-two".