64514416252 has 72 divisors (see below), whose sum is σ = 133677371520. Its totient is φ = 27005958720.

The previous prime is 64514416243. The next prime is 64514416277. The reversal of 64514416252 is 25261441546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3254523 + ... + 3274285.

It is an arithmetic number, because the mean of its divisors is an integer number (1856630160).

Almost surely, 2^64514416252 is an apocalyptic number.

It is an amenable number.

64514416252 is an abundant number, since it is smaller than the sum of its proper divisors (69162955268).

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

64514416252 is a wasteful number, since it uses less digits than its factorization.

64514416252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20243 (or 20228 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

Adding to 64514416252 its reverse (25261441546), we get a palindrome (89775857798).

The spelling of 64514416252 in words is "sixty-four billion, five hundred fourteen million, four hundred sixteen thousand, two hundred fifty-two".