64257891184 has 20 divisors (see below), whose sum is σ = 131823174384. Its totient is φ = 30239007488.

The previous prime is 64257891151. The next prime is 64257891221. The reversal of 64257891184 is 48119875246.

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 3 ways as a sum of consecutive naturals, for example, 118120852 + ... + 118121395.

Almost surely, 2^64257891184 is an apocalyptic number.

It is an amenable number.

64257891184 is an abundant number, since it is smaller than the sum of its proper divisors (67565283200).

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

64257891184 is a wasteful number, since it uses less digits than its factorization.

64257891184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236242272 (or 236242266 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 64257891184 in words is "sixty-four billion, two hundred fifty-seven million, eight hundred ninety-one thousand, one hundred eighty-four".