64188276338000 has 40 divisors (see below), whose sum is σ = 155207252190120. Its totient is φ = 25675310534400.

The previous prime is 64188276337981. The next prime is 64188276338111. The reversal of 64188276338000 is 83367288146.

It can be written as a sum of positive squares in 4 ways, for example, as 4214217756736 + 59974058581264 = 2052856^2 + 7744292^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16047067085 + ... + 16047071084.

It is an arithmetic number, because the mean of its divisors is an integer number (3880181304753).

Almost surely, 2^{64188276338000} is an apocalyptic number.

It is an amenable number.

64188276338000 is an abundant number, since it is smaller than the sum of its proper divisors (91018975852120).

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

64188276338000 is a wasteful number, since it uses less digits than its factorization.

64188276338000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094138192 (or 32094138176 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 64188276338000 in words is "sixty-four trillion, one hundred eighty-eight billion, two hundred seventy-six million, three hundred thirty-eight thousand".