64376401320 has 256 divisors, whose sum is σ = 267538636800. Its totient is φ = 13376897280.

The previous prime is 64376401307. The next prime is 64376401339. The reversal of 64376401320 is 2310467346.

It is a happy number.

64376401320 is a `hidden beast` number, since 6 + 4 + 3 + 7 + 640 + 1 + 3 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 303904 + ... + 470223.

It is an arithmetic number, because the mean of its divisors is an integer number (1045072800).

Almost surely, 2^64376401320 is an apocalyptic number.

64376401320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64376401320 is an abundant number, since it is smaller than the sum of its proper divisors (203162235480).

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

64376401320 is a wasteful number, since it uses less digits than its factorization.

64376401320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774165 (or 774155 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

Adding to 64376401320 its reverse (2310467346), we get a palindrome (66686868666).

The spelling of 64376401320 in words is "sixty-four billion, three hundred seventy-six million, four hundred one thousand, three hundred twenty".