104853563721 has 63 divisors (see below), whose sum is σ = 160486389021. Its totient is φ = 68474369304.

The previous prime is 104853563707. The next prime is 104853563743. The reversal of 104853563721 is 127365358401.

It is a happy number.

The square root of 104853563721 is 323811.

It is a perfect power (a square), and thus also a powerful number.

104853563721 is a `hidden beast` number, since 1 + 0 + 4 + 8 + 5 + 3 + 5 + 637 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-104853563721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104853563791) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 585774010 + ... + 585774188.

Almost surely, 2^104853563721 is an apocalyptic number.

104853563721 is the 323811-st square number.

104853563721 is the 161906-th centered octagonal number.

It is an amenable number.

104853563721 is a deficient number, since it is larger than the sum of its proper divisors (55632825300).

104853563721 is an frugal number, since it uses more digits than its factorization.

104853563721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 104853563721 in words is "one hundred four billion, eight hundred fifty-three million, five hundred sixty-three thousand, seven hundred twenty-one".