64772756541 has 40 divisors (see below), whose sum is σ = 100495533600. Its totient is φ = 41526324000.

The previous prime is 64772756539. The next prime is 64772756549. The reversal of 64772756541 is 14565727746.

64772756541 is a `hidden beast` number, since 6 + 4 + 7 + 72 + 7 + 565 + 4 + 1 = 666.

64772756541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64772756541 - 2¹ = 64772756539 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64772756549) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 534670 + ... + 644528.

It is an arithmetic number, because the mean of its divisors is an integer number (2512388340).

Almost surely, 2^64772756541 is an apocalyptic number.

It is an amenable number.

64772756541 is a deficient number, since it is larger than the sum of its proper divisors (35722777059).

64772756541 is a wasteful number, since it uses less digits than its factorization.

64772756541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110151 (or 110142 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 64772756541 in words is "sixty-four billion, seven hundred seventy-two million, seven hundred fifty-six thousand, five hundred forty-one".