64310947623 has 128 divisors (see below), whose sum is σ = 115032960000. Its totient is φ = 35079340032.

The previous prime is 64310947579. The next prime is 64310947639. The reversal of 64310947623 is 32674901346.

64310947623 is a `hidden beast` number, since 6 + 4 + 3 + 10 + 9 + 4 + 7 + 623 = 666.

It is not a de Polignac number, because 64310947623 - 2²⁶ = 64243838759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64310947663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20292183 + ... + 20295351.

It is an arithmetic number, because the mean of its divisors is an integer number (898695000).

Almost surely, 2^64310947623 is an apocalyptic number.

64310947623 is a deficient number, since it is larger than the sum of its proper divisors (50722012377).

64310947623 is a wasteful number, since it uses less digits than its factorization.

64310947623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406 (or 3400 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 64310947623 in words is "sixty-four billion, three hundred ten million, nine hundred forty-seven thousand, six hundred twenty-three".