64610169252 has 24 divisors (see below), whose sum is σ = 150761238432. Its totient is φ = 21536126400.

The previous prime is 64610169209. The next prime is 64610169289. The reversal of 64610169252 is 25296101646.

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, 690552 + ... + 778512.

It is an arithmetic number, because the mean of its divisors is an integer number (6281718268).

Almost surely, 2^64610169252 is an apocalyptic number.

It is an amenable number.

64610169252 is an abundant number, since it is smaller than the sum of its proper divisors (86151069180).

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

64610169252 is a wasteful number, since it uses less digits than its factorization.

64610169252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149179 (or 149177 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 64610169252 in words is "sixty-four billion, six hundred ten million, one hundred sixty-nine thousand, two hundred fifty-two".