104857608781 has 2 divisors, whose sum is σ = 104857608782. Its totient is φ = 104857608780.

The previous prime is 104857608767. The next prime is 104857608881. The reversal of 104857608781 is 187806758401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103198350025 + 1659258756 = 321245^2 + 40734^2 .

It is a cyclic number.

It is not a de Polignac number, because 104857608781 - 2²⁷ = 104723391053 is a prime.

It is a super-2 number, since 2×104857608781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104857608181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52428804390 + 52428804391.

It is an arithmetic number, because the mean of its divisors is an integer number (52428804391).

Almost surely, 2^104857608781 is an apocalyptic number.

It is an amenable number.

104857608781 is a deficient number, since it is larger than the sum of its proper divisors (1).

104857608781 is an equidigital number, since it uses as much as digits as its factorization.

104857608781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3010560, while the sum is 55.

The spelling of 104857608781 in words is "one hundred four billion, eight hundred fifty-seven million, six hundred eight thousand, seven hundred eighty-one".