64145631452 has 48 divisors (see below), whose sum is σ = 128988045312. Its totient is φ = 27341858880.

The previous prime is 64145631421. The next prime is 64145631499. The reversal of 64145631452 is 25413654146.

It is a super-2 number, since 2×64145631452² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11653733 + ... + 11659235.

It is an arithmetic number, because the mean of its divisors is an integer number (2687250944).

Almost surely, 2^64145631452 is an apocalyptic number.

It is an amenable number.

64145631452 is an abundant number, since it is smaller than the sum of its proper divisors (64842413860).

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

64145631452 is a wasteful number, since it uses less digits than its factorization.

64145631452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698 (or 7696 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The spelling of 64145631452 in words is "sixty-four billion, one hundred forty-five million, six hundred thirty-one thousand, four hundred fifty-two".