64532855738 has 16 divisors (see below), whose sum is σ = 105501354336. Its totient is φ = 29425545840.

The previous prime is 64532855719. The next prime is 64532855743. The reversal of 64532855738 is 83755823546.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14949848 + ... + 14954163.

It is an arithmetic number, because the mean of its divisors is an integer number (6593834646).

Almost surely, 2^64532855738 is an apocalyptic number.

64532855738 is a deficient number, since it is larger than the sum of its proper divisors (40968498598).

64532855738 is a wasteful number, since it uses less digits than its factorization.

64532855738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29904109.

The product of its digits is 24192000, while the sum is 56.

The spelling of 64532855738 in words is "sixty-four billion, five hundred thirty-two million, eight hundred fifty-five thousand, seven hundred thirty-eight".