100456395491 has 2 divisors, whose sum is σ = 100456395492. Its totient is φ = 100456395490.

The previous prime is 100456395443. The next prime is 100456395493. The reversal of 100456395491 is 194593654001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100456395491 is a prime.

Together with 100456395493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100456395493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50228197745 + 50228197746.

It is an arithmetic number, because the mean of its divisors is an integer number (50228197746).

Almost surely, 2^100456395491 is an apocalyptic number.

100456395491 is a deficient number, since it is larger than the sum of its proper divisors (1).

100456395491 is an equidigital number, since it uses as much as digits as its factorization.

100456395491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 100456395491 in words is "one hundred billion, four hundred fifty-six million, three hundred ninety-five thousand, four hundred ninety-one".