481621886939 has 4 divisors (see below), whose sum is σ = 484405828656. Its totient is φ = 478837945224.

The previous prime is 481621886903. The next prime is 481621886947. The reversal of 481621886939 is 939688126184.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481621886939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481621886959) 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, 1391970599 + ... + 1391970944.

It is an arithmetic number, because the mean of its divisors is an integer number (121101457164).

Almost surely, 2^481621886939 is an apocalyptic number.

481621886939 is a deficient number, since it is larger than the sum of its proper divisors (2783941717).

481621886939 is a wasteful number, since it uses less digits than its factorization.

481621886939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783941716.

The product of its digits is 35831808, while the sum is 65.

The spelling of 481621886939 in words is "four hundred eighty-one billion, six hundred twenty-one million, eight hundred eighty-six thousand, nine hundred thirty-nine".