101255291491 has 2 divisors, whose sum is σ = 101255291492. Its totient is φ = 101255291490.

The previous prime is 101255291461. The next prime is 101255291513. The reversal of 101255291491 is 194192552101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101255291491 - 2¹⁵ = 101255258723 is a prime.

It is not a weakly prime, because it can be changed into another prime (101255291411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50627645745 + 50627645746.

It is an arithmetic number, because the mean of its divisors is an integer number (50627645746).

Almost surely, 2^101255291491 is an apocalyptic number.

101255291491 is a deficient number, since it is larger than the sum of its proper divisors (1).

101255291491 is an equidigital number, since it uses as much as digits as its factorization.

101255291491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 101255291491 in words is "one hundred one billion, two hundred fifty-five million, two hundred ninety-one thousand, four hundred ninety-one".