104881553681 has 2 divisors, whose sum is σ = 104881553682. Its totient is φ = 104881553680.

The previous prime is 104881553659. The next prime is 104881553717. The reversal of 104881553681 is 186355188401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68547094225 + 36334459456 = 261815^2 + 190616^2 .

It is a cyclic number.

It is not a de Polignac number, because 104881553681 - 2²⁶ = 104814444817 is a prime.

It is a super-2 number, since 2×104881553681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (104881553281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52440776840 + 52440776841.

It is an arithmetic number, because the mean of its divisors is an integer number (52440776841).

Almost surely, 2^104881553681 is an apocalyptic number.

It is an amenable number.

104881553681 is a deficient number, since it is larger than the sum of its proper divisors (1).

104881553681 is an equidigital number, since it uses as much as digits as its factorization.

104881553681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921600, while the sum is 50.

The spelling of 104881553681 in words is "one hundred four billion, eight hundred eighty-one million, five hundred fifty-three thousand, six hundred eighty-one".