64326920583 has 4 divisors (see below), whose sum is σ = 85769227448. Its totient is φ = 42884613720.

The previous prime is 64326920563. The next prime is 64326920639. The reversal of 64326920583 is 38502962346.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64326920583 - 2⁶ = 64326920519 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 (64326920563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10721153428 + ... + 10721153433.

It is an arithmetic number, because the mean of its divisors is an integer number (21442306862).

Almost surely, 2^64326920583 is an apocalyptic number.

64326920583 is a deficient number, since it is larger than the sum of its proper divisors (21442306865).

64326920583 is a wasteful number, since it uses less digits than its factorization.

64326920583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21442306864.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 64326920583 in words is "sixty-four billion, three hundred twenty-six million, nine hundred twenty thousand, five hundred eighty-three".