6523313691 has 4 divisors (see below), whose sum is σ = 8697751592. Its totient is φ = 4348875792.

The previous prime is 6523313683. The next prime is 6523313777. The reversal of 6523313691 is 1963133256.

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

It is not a de Polignac number, because 6523313691 - 2³ = 6523313683 is a prime.

It is a super-2 number, since 2×6523313691² = 85107243022376086962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6523313611) 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, 1087218946 + ... + 1087218951.

It is an arithmetic number, because the mean of its divisors is an integer number (2174437898).

Almost surely, 2^6523313691 is an apocalyptic number.

6523313691 is a deficient number, since it is larger than the sum of its proper divisors (2174437901).

6523313691 is a wasteful number, since it uses less digits than its factorization.

6523313691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174437900.

The product of its digits is 87480, while the sum is 39.

The square root of 6523313691 is about 80767.0334418691. The cubic root of 6523313691 is about 1868.4841625470.

The spelling of 6523313691 in words is "six billion, five hundred twenty-three million, three hundred thirteen thousand, six hundred ninety-one".