110656637491 has 2 divisors, whose sum is σ = 110656637492. Its totient is φ = 110656637490.

The previous prime is 110656637489. The next prime is 110656637513. The reversal of 110656637491 is 194736656011.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (194736656011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110656637491 - 2¹ = 110656637489 is a prime.

Together with 110656637489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (110656637591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55328318745 + 55328318746.

It is an arithmetic number, because the mean of its divisors is an integer number (55328318746).

Almost surely, 2^110656637491 is an apocalyptic number.

110656637491 is a deficient number, since it is larger than the sum of its proper divisors (1).

110656637491 is an equidigital number, since it uses as much as digits as its factorization.

110656637491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 110656637491 in words is "one hundred ten billion, six hundred fifty-six million, six hundred thirty-seven thousand, four hundred ninety-one".