64329945273 has 12 divisors (see below), whose sum is σ = 101368398768. Its totient is φ = 38987845560.

The previous prime is 64329945269. The next prime is 64329945307. The reversal of 64329945273 is 37254992346.

64329945273 is a `hidden beast` number, since 6 + 4 + 3 + 29 + 94 + 527 + 3 = 666.

It is not a de Polignac number, because 64329945273 - 2² = 64329945269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64329940273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324898615 + ... + 324898812.

It is an arithmetic number, because the mean of its divisors is an integer number (8447366564).

Almost surely, 2^64329945273 is an apocalyptic number.

It is an amenable number.

64329945273 is a deficient number, since it is larger than the sum of its proper divisors (37038453495).

64329945273 is a wasteful number, since it uses less digits than its factorization.

64329945273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649797444 (or 649797441 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 54.

The spelling of 64329945273 in words is "sixty-four billion, three hundred twenty-nine million, nine hundred forty-five thousand, two hundred seventy-three".