64372622540 has 12 divisors (see below), whose sum is σ = 135182507376. Its totient is φ = 25749049008.

The previous prime is 64372622539. The next prime is 64372622557. The reversal of 64372622540 is 4522627346.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 1609315544 + ... + 1609315583.

It is an arithmetic number, because the mean of its divisors is an integer number (11265208948).

Almost surely, 2^64372622540 is an apocalyptic number.

It is an amenable number.

64372622540 is an abundant number, since it is smaller than the sum of its proper divisors (70809884836).

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

64372622540 is a wasteful number, since it uses less digits than its factorization.

64372622540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218631136 (or 3218631134 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 41.

The spelling of 64372622540 in words is "sixty-four billion, three hundred seventy-two million, six hundred twenty-two thousand, five hundred forty".