104220665451 has 24 divisors (see below), whose sum is σ = 172391648000. Its totient is φ = 59435300016.

The previous prime is 104220665431. The next prime is 104220665519. The reversal of 104220665451 is 154566022401.

104220665451 is a `hidden beast` number, since 10 + 42 + 2 + 0 + 66 + 545 + 1 = 666.

It is not a de Polignac number, because 104220665451 - 2⁷ = 104220665323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104220665431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1626175 + ... + 1689048.

Almost surely, 2^104220665451 is an apocalyptic number.

104220665451 is a deficient number, since it is larger than the sum of its proper divisors (68170982549).

104220665451 is a wasteful number, since it uses less digits than its factorization.

104220665451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315735 (or 3315732 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 104220665451 its reverse (154566022401), we get a palindrome (258786687852).

The spelling of 104220665451 in words is "one hundred four billion, two hundred twenty million, six hundred sixty-five thousand, four hundred fifty-one".