64133923365 has 16 divisors (see below), whose sum is σ = 114015864000. Its totient is φ = 34204759056.

The previous prime is 64133923349. The next prime is 64133923391. The reversal of 64133923365 is 56332933146.

64133923365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64133923365 - 2⁴ = 64133923349 is a prime.

It is a super-2 number, since 2×64133923365² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64133923365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237532915 + ... + 237533184.

It is an arithmetic number, because the mean of its divisors is an integer number (7125991500).

Almost surely, 2^64133923365 is an apocalyptic number.

It is an amenable number.

64133923365 is a deficient number, since it is larger than the sum of its proper divisors (49881940635).

64133923365 is a wasteful number, since it uses less digits than its factorization.

64133923365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475066113 (or 475066107 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 45.

The spelling of 64133923365 in words is "sixty-four billion, one hundred thirty-three million, nine hundred twenty-three thousand, three hundred sixty-five".