6496854721631 has 4 divisors (see below), whose sum is σ = 6496879126272. Its totient is φ = 6496830316992.

The previous prime is 6496854721517. The next prime is 6496854721663. The reversal of 6496854721631 is 1361274586946.

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

It is a cyclic number.

It is not a de Polignac number, because 6496854721631 - 2²² = 6496850527327 is a prime.

It is a super-2 number, since 2×6496854721631² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6496854721681) 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, 11798546 + ... + 12336911.

It is an arithmetic number, because the mean of its divisors is an integer number (1624219781568).

Almost surely, 2^{6496854721631} is an apocalyptic number.

6496854721631 is a deficient number, since it is larger than the sum of its proper divisors (24404641).

6496854721631 is a wasteful number, since it uses less digits than its factorization.

6496854721631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24404640.

The product of its digits is 52254720, while the sum is 62.

The spelling of 6496854721631 in words is "six trillion, four hundred ninety-six billion, eight hundred fifty-four million, seven hundred twenty-one thousand, six hundred thirty-one".