64312466544 has 60 divisors (see below), whose sum is σ = 183815083296. Its totient is φ = 20981369856.

The previous prime is 64312466489. The next prime is 64312466549. The reversal of 64312466544 is 44566421346.

64312466544 is a `hidden beast` number, since 6 + 43 + 1 + 2 + 4 + 66 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64312466544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64312466549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4744449 + ... + 4757984.

Almost surely, 2^64312466544 is an apocalyptic number.

It is an amenable number.

64312466544 is an abundant number, since it is smaller than the sum of its proper divisors (119502616752).

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

64312466544 is a wasteful number, since it uses less digits than its factorization.

64312466544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502494 (or 9502485 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 45.

The spelling of 64312466544 in words is "sixty-four billion, three hundred twelve million, four hundred sixty-six thousand, five hundred forty-four".