494952861631 has 2 divisors, whose sum is σ = 494952861632. Its totient is φ = 494952861630.

The previous prime is 494952861617. The next prime is 494952861673. The reversal of 494952861631 is 136168259494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494952861631 - 2⁷ = 494952861503 is a prime.

It is a super-2 number, since 2×494952861631² (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 (494952831631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247476430815 + 247476430816.

It is an arithmetic number, because the mean of its divisors is an integer number (247476430816).

Almost surely, 2^494952861631 is an apocalyptic number.

494952861631 is a deficient number, since it is larger than the sum of its proper divisors (1).

494952861631 is an equidigital number, since it uses as much as digits as its factorization.

494952861631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 58.

The spelling of 494952861631 in words is "four hundred ninety-four billion, nine hundred fifty-two million, eight hundred sixty-one thousand, six hundred thirty-one".