100420636291 has 2 divisors, whose sum is σ = 100420636292. Its totient is φ = 100420636290.

The previous prime is 100420636273. The next prime is 100420636343. The reversal of 100420636291 is 192636024001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100420636291 - 2⁹ = 100420635779 is a prime.

It is not a weakly prime, because it can be changed into another prime (100420636891) 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, 50210318145 + 50210318146.

It is an arithmetic number, because the mean of its divisors is an integer number (50210318146).

Almost surely, 2^100420636291 is an apocalyptic number.

100420636291 is a deficient number, since it is larger than the sum of its proper divisors (1).

100420636291 is an equidigital number, since it uses as much as digits as its factorization.

100420636291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 100420636291 in words is "one hundred billion, four hundred twenty million, six hundred thirty-six thousand, two hundred ninety-one".