481983646221 has 48 divisors (see below), whose sum is σ = 891447043968. Its totient is φ = 243614044800.

The previous prime is 481983646217. The next prime is 481983646223. The reversal of 481983646221 is 122646389184.

481983646221 is a `hidden beast` number, since 4 + 8 + 1 + 9 + 8 + 3 + 6 + 4 + 622 + 1 = 666.

It is not a de Polignac number, because 481983646221 - 2² = 481983646217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481983646223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9373050 + ... + 9424331.

It is an arithmetic number, because the mean of its divisors is an integer number (18571813416).

Almost surely, 2^481983646221 is an apocalyptic number.

It is an amenable number.

481983646221 is a deficient number, since it is larger than the sum of its proper divisors (409463397747).

481983646221 is a wasteful number, since it uses less digits than its factorization.

481983646221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18797442 (or 18797439 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 481983646221 in words is "four hundred eighty-one billion, nine hundred eighty-three million, six hundred forty-six thousand, two hundred twenty-one".