481909299921 has 24 divisors (see below), whose sum is σ = 796961116224. Its totient is φ = 274882330080.

The previous prime is 481909299919. The next prime is 481909300007. The reversal of 481909299921 is 129992909184.

It is not a de Polignac number, because 481909299921 - 2¹ = 481909299919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (481909299721) 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, 6831475 + ... + 6901656.

It is an arithmetic number, because the mean of its divisors is an integer number (33206713176).

Almost surely, 2^481909299921 is an apocalyptic number.

It is an amenable number.

481909299921 is a deficient number, since it is larger than the sum of its proper divisors (315051816303).

481909299921 is a wasteful number, since it uses less digits than its factorization.

481909299921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13733701 (or 13733698 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 63.

The spelling of 481909299921 in words is "four hundred eighty-one billion, nine hundred nine million, two hundred ninety-nine thousand, nine hundred twenty-one".