64535373144 has 48 divisors (see below), whose sum is σ = 190672695720. Its totient is φ = 19556173440.

The previous prime is 64535373137. The next prime is 64535373151. The reversal of 64535373144 is 44137353546.

64535373144 is a `hidden beast` number, since 6 + 4 + 535 + 3 + 73 + 1 + 44 = 666.

64535373144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64535373137) and next prime (64535373151).

It is a super-3 number, since 3×64535373144³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64535373144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40741237 + ... + 40742820.

Almost surely, 2^64535373144 is an apocalyptic number.

It is an amenable number.

64535373144 is an abundant number, since it is smaller than the sum of its proper divisors (126137322576).

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

64535373144 is a wasteful number, since it uses less digits than its factorization.

64535373144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81484080 (or 81484073 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

It can be divided in two parts, 6453537 and 3144, that added together give a square (6456681 = 2541²).

The spelling of 64535373144 in words is "sixty-four billion, five hundred thirty-five million, three hundred seventy-three thousand, one hundred forty-four".