6431667722245 has 8 divisors (see below), whose sum is σ = 7906245200280. Its totient is φ = 5019838222080.

The previous prime is 6431667722171. The next prime is 6431667722257. The reversal of 6431667722245 is 5422277661346.

It can be written as a sum of positive squares in 4 ways, for example, as 175901392836 + 6255766329409 = 419406^2 + 2501153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6431667722245 - 2¹⁵ = 6431667689477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15686994240 + ... + 15686994649.

It is an arithmetic number, because the mean of its divisors is an integer number (988280650035).

Almost surely, 2^{6431667722245} is an apocalyptic number.

It is an amenable number.

6431667722245 is a deficient number, since it is larger than the sum of its proper divisors (1474577478035).

6431667722245 is a wasteful number, since it uses less digits than its factorization.

6431667722245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31373988935.

The product of its digits is 20321280, while the sum is 55.

The spelling of 6431667722245 in words is "six trillion, four hundred thirty-one billion, six hundred sixty-seven million, seven hundred twenty-two thousand, two hundred forty-five".