442256712435631 has 2 divisors, whose sum is σ = 442256712435632. Its totient is φ = 442256712435630.

The previous prime is 442256712435617. The next prime is 442256712435641. The reversal of 442256712435631 is 136534217652244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442256712435631 - 2²¹ = 442256710338479 is a prime.

It is a super-2 number, since 2×442256712435631² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442256712435611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221128356217815 + 221128356217816.

It is an arithmetic number, because the mean of its divisors is an integer number (221128356217816).

Almost surely, 2^{442256712435631} is an apocalyptic number.

442256712435631 is a deficient number, since it is larger than the sum of its proper divisors (1).

442256712435631 is an equidigital number, since it uses as much as digits as its factorization.

442256712435631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 55.

The spelling of 442256712435631 in words is "four hundred forty-two trillion, two hundred fifty-six billion, seven hundred twelve million, four hundred thirty-five thousand, six hundred thirty-one".