64980055732 has 12 divisors (see below), whose sum is σ = 113716948996. Its totient is φ = 32489498880.

The previous prime is 64980055717. The next prime is 64980055739. The reversal of 64980055732 is 23755008946.

It can be written as a sum of positive squares in 2 ways, for example, as 12430912036 + 52549143696 = 111494^2 + 229236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64980055739) by changing a digit.

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, 304132 + ... + 471652.

Almost surely, 2^64980055732 is an apocalyptic number.

It is an amenable number.

64980055732 is a deficient number, since it is larger than the sum of its proper divisors (48736893264).

64980055732 is a wasteful number, since it uses less digits than its factorization.

64980055732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264498 (or 264496 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 64980055732 in words is "sixty-four billion, nine hundred eighty million, fifty-five thousand, seven hundred thirty-two".