64492206368 has 18 divisors (see below), whose sum is σ = 126971859609. Its totient is φ = 32245384896.

The previous prime is 64492206367. The next prime is 64492206377. The reversal of 64492206368 is 86360229446.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 64428653584 + 63552784 = 253828^2 + 7972^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=179572.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64492206367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1414130 + ... + 1459022.

Almost surely, 2^64492206368 is an apocalyptic number.

It is an amenable number.

64492206368 is a deficient number, since it is larger than the sum of its proper divisors (62479653241).

64492206368 is an frugal number, since it uses more digits than its factorization.

64492206368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89796 (or 44895 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 50.

Multiplying 64492206368 by its sum of digits (50), we get a square (3224610318400 = 1795720²).

The spelling of 64492206368 in words is "sixty-four billion, four hundred ninety-two million, two hundred six thousand, three hundred sixty-eight".