649426124231 has 2 divisors, whose sum is σ = 649426124232. Its totient is φ = 649426124230.

The previous prime is 649426124159. The next prime is 649426124261. The reversal of 649426124231 is 132421624946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649426124231 - 2¹⁸ = 649425862087 is a prime.

It is a super-2 number, since 2×649426124231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649426124261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324713062115 + 324713062116.

It is an arithmetic number, because the mean of its divisors is an integer number (324713062116).

Almost surely, 2^649426124231 is an apocalyptic number.

649426124231 is a deficient number, since it is larger than the sum of its proper divisors (1).

649426124231 is an equidigital number, since it uses as much as digits as its factorization.

649426124231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 44.

The spelling of 649426124231 in words is "six hundred forty-nine billion, four hundred twenty-six million, one hundred twenty-four thousand, two hundred thirty-one".