64332812357 has 4 divisors (see below), whose sum is σ = 70181249856. Its totient is φ = 58484374860.

The previous prime is 64332812321. The next prime is 64332812371. The reversal of 64332812357 is 75321823346.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64332812357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64332812317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2924218733 + ... + 2924218754.

It is an arithmetic number, because the mean of its divisors is an integer number (17545312464).

Almost surely, 2^64332812357 is an apocalyptic number.

It is an amenable number.

64332812357 is a deficient number, since it is larger than the sum of its proper divisors (5848437499).

64332812357 is a wasteful number, since it uses less digits than its factorization.

64332812357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848437498.

The product of its digits is 725760, while the sum is 44.

The spelling of 64332812357 in words is "sixty-four billion, three hundred thirty-two million, eight hundred twelve thousand, three hundred fifty-seven".