64988120956 has 12 divisors (see below), whose sum is σ = 124068231000. Its totient is φ = 29540054960.

The previous prime is 64988120941. The next prime is 64988120959. The reversal of 64988120956 is 65902188946.

It is a self number, because there is not a number n which added to its sum of digits gives 64988120956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64988120959) 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 3 ways as a sum of consecutive naturals, for example, 738501331 + ... + 738501418.

It is an arithmetic number, because the mean of its divisors is an integer number (10339019250).

Almost surely, 2^64988120956 is an apocalyptic number.

It is an amenable number.

64988120956 is a deficient number, since it is larger than the sum of its proper divisors (59080110044).

64988120956 is a wasteful number, since it uses less digits than its factorization.

64988120956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477002764 (or 1477002762 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 64988120956 in words is "sixty-four billion, nine hundred eighty-eight million, one hundred twenty thousand, nine hundred fifty-six".