104457768221 has 4 divisors (see below), whose sum is σ = 105631451100. Its totient is φ = 103284085344.

The previous prime is 104457768209. The next prime is 104457768253. The reversal of 104457768221 is 122867754401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34132562500 + 70325205721 = 184750^2 + 265189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104457768221 is a prime.

It is a super-2 number, since 2×104457768221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104457768281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586841306 + ... + 586841483.

It is an arithmetic number, because the mean of its divisors is an integer number (26407862775).

Almost surely, 2^104457768221 is an apocalyptic number.

It is an amenable number.

104457768221 is a deficient number, since it is larger than the sum of its proper divisors (1173682879).

104457768221 is an equidigital number, since it uses as much as digits as its factorization.

104457768221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173682878.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 104457768221 in words is "one hundred four billion, four hundred fifty-seven million, seven hundred sixty-eight thousand, two hundred twenty-one".