401505876091 has 2 divisors, whose sum is σ = 401505876092. Its totient is φ = 401505876090.

The previous prime is 401505876017. The next prime is 401505876133. The reversal of 401505876091 is 190678505104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401505876091 - 2²⁹ = 400969005179 is a prime.

It is a super-2 number, since 2×401505876091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401505876991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200752938045 + 200752938046.

It is an arithmetic number, because the mean of its divisors is an integer number (200752938046).

Almost surely, 2^401505876091 is an apocalyptic number.

401505876091 is a deficient number, since it is larger than the sum of its proper divisors (1).

401505876091 is an equidigital number, since it uses as much as digits as its factorization.

401505876091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 401505876091 in words is "four hundred one billion, five hundred five million, eight hundred seventy-six thousand, ninety-one".