63928611992 has 32 divisors (see below), whose sum is σ = 137057642400. Its totient is φ = 27384424704.

The previous prime is 63928611983. The next prime is 63928611997. The reversal of 63928611992 is 29911682936.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63928611997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167693 + ... + 394940.

It is an arithmetic number, because the mean of its divisors is an integer number (4283051325).

Almost surely, 2^63928611992 is an apocalyptic number.

It is an amenable number.

63928611992 is an abundant number, since it is smaller than the sum of its proper divisors (73129030408).

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

63928611992 is a wasteful number, since it uses less digits than its factorization.

63928611992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564675 (or 564671 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 56.

The spelling of 63928611992 in words is "sixty-three billion, nine hundred twenty-eight million, six hundred eleven thousand, nine hundred ninety-two".