481981904811 has 24 divisors (see below), whose sum is σ = 783986211840. Its totient is φ = 282687332400.

The previous prime is 481981904797. The next prime is 481981904819. The reversal of 481981904811 is 118409189184.

481981904811 is a `hidden beast` number, since 4 + 81 + 9 + 81 + 9 + 0 + 481 + 1 = 666.

It is not a de Polignac number, because 481981904811 - 2¹¹ = 481981902763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (481981904819) 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, 78521191 + ... + 78527328.

It is an arithmetic number, because the mean of its divisors is an integer number (32666092160).

Almost surely, 2^481981904811 is an apocalyptic number.

481981904811 is a deficient number, since it is larger than the sum of its proper divisors (302004307029).

481981904811 is a wasteful number, since it uses less digits than its factorization.

481981904811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157048567 (or 157048564 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 54.

The spelling of 481981904811 in words is "four hundred eighty-one billion, nine hundred eighty-one million, nine hundred four thousand, eight hundred eleven".