481151211021 has 64 divisors (see below), whose sum is σ = 831707331840. Its totient is φ = 272194836480.

The previous prime is 481151210977. The next prime is 481151211049. The reversal of 481151211021 is 120112151184.

481151211021 is a `hidden beast` number, since 4 + 8 + 11 + 512 + 110 + 21 = 666.

It is not a de Polignac number, because 481151211021 - 2⁹ = 481151210509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481151211421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 681040 + ... + 1194201.

It is an arithmetic number, because the mean of its divisors is an integer number (12995427060).

Almost surely, 2^481151211021 is an apocalyptic number.

It is an amenable number.

481151211021 is a deficient number, since it is larger than the sum of its proper divisors (350556120819).

481151211021 is a wasteful number, since it uses less digits than its factorization.

481151211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875323 (or 1875317 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The spelling of 481151211021 in words is "four hundred eighty-one billion, one hundred fifty-one million, two hundred eleven thousand, twenty-one".