64325900451918 has 64 divisors (see below), whose sum is σ = 152102063554560. Its totient is φ = 17744911226112.

The previous prime is 64325900451899. The next prime is 64325900451931. The reversal of 64325900451918 is 81915400952346.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 194394355 + ... + 194724977.

It is an arithmetic number, because the mean of its divisors is an integer number (2376594743040).

Almost surely, 2^{64325900451918} is an apocalyptic number.

64325900451918 is an abundant number, since it is smaller than the sum of its proper divisors (87776163102642).

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

64325900451918 is a wasteful number, since it uses less digits than its factorization.

64325900451918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490401.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 64325900451918 in words is "sixty-four trillion, three hundred twenty-five billion, nine hundred million, four hundred fifty-one thousand, nine hundred eighteen".