65312216452 has 24 divisors (see below), whose sum is σ = 134838126080. Its totient is φ = 27088015680.

The previous prime is 65312216447. The next prime is 65312216491. The reversal of 65312216452 is 25461221356.

65312216452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37621377 + ... + 37623112.

Almost surely, 2^65312216452 is an apocalyptic number.

65312216452 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

65312216452 is an abundant number, since it is smaller than the sum of its proper divisors (69525909628).

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

65312216452 is a wasteful number, since it uses less digits than its factorization.

65312216452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75244531 (or 75244529 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The spelling of 65312216452 in words is "sixty-five billion, three hundred twelve million, two hundred sixteen thousand, four hundred fifty-two".