64733253108 has 24 divisors (see below), whose sum is σ = 151048436448. Its totient is φ = 21577154016.

The previous prime is 64733253073. The next prime is 64733253127. The reversal of 64733253108 is 80135233746.

It is a self number, because there is not a number n which added to its sum of digits gives 64733253108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692910 + ... + 780762.

It is an arithmetic number, because the mean of its divisors is an integer number (6293684852).

Almost surely, 2^64733253108 is an apocalyptic number.

It is an amenable number.

64733253108 is an abundant number, since it is smaller than the sum of its proper divisors (86315183340).

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

64733253108 is a wasteful number, since it uses less digits than its factorization.

64733253108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149263 (or 149261 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 64733253108 in words is "sixty-four billion, seven hundred thirty-three million, two hundred fifty-three thousand, one hundred eight".