364561407491 has 2 divisors, whose sum is σ = 364561407492. Its totient is φ = 364561407490.

The previous prime is 364561407473. The next prime is 364561407533. The reversal of 364561407491 is 194704165463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 364561407491 - 2²² = 364557213187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (364561400491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182280703745 + 182280703746.

It is an arithmetic number, because the mean of its divisors is an integer number (182280703746).

Almost surely, 2^364561407491 is an apocalyptic number.

364561407491 is a deficient number, since it is larger than the sum of its proper divisors (1).

364561407491 is an equidigital number, since it uses as much as digits as its factorization.

364561407491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 364561407491 in words is "three hundred sixty-four billion, five hundred sixty-one million, four hundred seven thousand, four hundred ninety-one".