464004331521 has 16 divisors (see below), whose sum is σ = 620362002624. Its totient is φ = 308492043264.

The previous prime is 464004331513. The next prime is 464004331523. The reversal of 464004331521 is 125133400464.

It is a happy number.

It is not a de Polignac number, because 464004331521 - 2³ = 464004331513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (464004331523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3065790 + ... + 3213576.

It is an arithmetic number, because the mean of its divisors is an integer number (38772625164).

Almost surely, 2^464004331521 is an apocalyptic number.

It is an amenable number.

464004331521 is a deficient number, since it is larger than the sum of its proper divisors (156357671103).

464004331521 is a wasteful number, since it uses less digits than its factorization.

464004331521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150640.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 464004331521 its reverse (125133400464), we get a palindrome (589137731985).

The spelling of 464004331521 in words is "four hundred sixty-four billion, four million, three hundred thirty-one thousand, five hundred twenty-one".