113493401881 has 2 divisors, whose sum is σ = 113493401882. Its totient is φ = 113493401880.

The previous prime is 113493401851. The next prime is 113493401941. The reversal of 113493401881 is 188104394311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66811910400 + 46681491481 = 258480^2 + 216059^2 .

It is a cyclic number.

It is not a de Polignac number, because 113493401881 - 2⁷ = 113493401753 is a prime.

It is a super-2 number, since 2×113493401881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113493401851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56746700940 + 56746700941.

It is an arithmetic number, because the mean of its divisors is an integer number (56746700941).

Almost surely, 2^113493401881 is an apocalyptic number.

It is an amenable number.

113493401881 is a deficient number, since it is larger than the sum of its proper divisors (1).

113493401881 is an equidigital number, since it uses as much as digits as its factorization.

113493401881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 113493401881 in words is "one hundred thirteen billion, four hundred ninety-three million, four hundred one thousand, eight hundred eighty-one".