442861274810191 has 2 divisors, whose sum is σ = 442861274810192. Its totient is φ = 442861274810190.

The previous prime is 442861274810167. The next prime is 442861274810239. The reversal of 442861274810191 is 191018472168244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442861274810191 - 2²³ = 442861266421583 is a prime.

It is a super-2 number, since 2×442861274810191² (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 (442861274810131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221430637405095 + 221430637405096.

It is an arithmetic number, because the mean of its divisors is an integer number (221430637405096).

Almost surely, 2^{442861274810191} is an apocalyptic number.

442861274810191 is a deficient number, since it is larger than the sum of its proper divisors (1).

442861274810191 is an equidigital number, since it uses as much as digits as its factorization.

442861274810191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 442861274810191 in words is "four hundred forty-two trillion, eight hundred sixty-one billion, two hundred seventy-four million, eight hundred ten thousand, one hundred ninety-one".