100402340491 has 2 divisors, whose sum is σ = 100402340492. Its totient is φ = 100402340490.

The previous prime is 100402340399. The next prime is 100402340497. The reversal of 100402340491 is 194043204001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100402340491 - 2³⁵ = 66042602123 is a prime.

It is not a weakly prime, because it can be changed into another prime (100402340497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201170245 + 50201170246.

It is an arithmetic number, because the mean of its divisors is an integer number (50201170246).

Almost surely, 2^100402340491 is an apocalyptic number.

100402340491 is a deficient number, since it is larger than the sum of its proper divisors (1).

100402340491 is an equidigital number, since it uses as much as digits as its factorization.

100402340491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 100402340491 its reverse (194043204001), we get a palindrome (294445544492).

The spelling of 100402340491 in words is "one hundred billion, four hundred two million, three hundred forty thousand, four hundred ninety-one".