405997269191 has 2 divisors, whose sum is σ = 405997269192. Its totient is φ = 405997269190.

The previous prime is 405997269169. The next prime is 405997269199. The reversal of 405997269191 is 191962799504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405997269191 - 2³⁴ = 388817400007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405997269199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202998634595 + 202998634596.

It is an arithmetic number, because the mean of its divisors is an integer number (202998634596).

Almost surely, 2^405997269191 is an apocalyptic number.

405997269191 is a deficient number, since it is larger than the sum of its proper divisors (1).

405997269191 is an equidigital number, since it uses as much as digits as its factorization.

405997269191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The spelling of 405997269191 in words is "four hundred five billion, nine hundred ninety-seven million, two hundred sixty-nine thousand, one hundred ninety-one".