421591455113 has 2 divisors, whose sum is σ = 421591455114. Its totient is φ = 421591455112.

The previous prime is 421591454987. The next prime is 421591455157. The reversal of 421591455113 is 311554195124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220648151824 + 200943303289 = 469732^2 + 448267^2 .

It is a cyclic number.

It is not a de Polignac number, because 421591455113 - 2³⁰ = 420517713289 is a prime.

It is not a weakly prime, because it can be changed into another prime (421591455413) 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, 210795727556 + 210795727557.

It is an arithmetic number, because the mean of its divisors is an integer number (210795727557).

Almost surely, 2^421591455113 is an apocalyptic number.

It is an amenable number.

421591455113 is a deficient number, since it is larger than the sum of its proper divisors (1).

421591455113 is an equidigital number, since it uses as much as digits as its factorization.

421591455113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 41.

The spelling of 421591455113 in words is "four hundred twenty-one billion, five hundred ninety-one million, four hundred fifty-five thousand, one hundred thirteen".