445255115491 has 2 divisors, whose sum is σ = 445255115492. Its totient is φ = 445255115490.

The previous prime is 445255115483. The next prime is 445255115597. The reversal of 445255115491 is 194511552544.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445255115491 - 2³ = 445255115483 is a prime.

It is not a weakly prime, because it can be changed into another prime (445255115411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222627557745 + 222627557746.

It is an arithmetic number, because the mean of its divisors is an integer number (222627557746).

Almost surely, 2^445255115491 is an apocalyptic number.

445255115491 is a deficient number, since it is larger than the sum of its proper divisors (1).

445255115491 is an equidigital number, since it uses as much as digits as its factorization.

445255115491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720000, while the sum is 46.

The spelling of 445255115491 in words is "four hundred forty-five billion, two hundred fifty-five million, one hundred fifteen thousand, four hundred ninety-one".