481721799501 has 6 divisors (see below), whose sum is σ = 695820377070. Its totient is φ = 321147866328.

The previous prime is 481721799487. The next prime is 481721799529. The reversal of 481721799501 is 105997127184.

481721799501 is a `hidden beast` number, since 48 + 1 + 7 + 2 + 1 + 7 + 99 + 501 = 666.

It can be written as a sum of positive squares in only one way, i.e., 470095353225 + 11626446276 = 685635^2 + 107826^2 .

It is not a de Polignac number, because 481721799501 - 2²⁵ = 481688245069 is a prime.

It is a super-2 number, since 2×481721799501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481721799301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26762322186 + ... + 26762322203.

It is an arithmetic number, because the mean of its divisors is an integer number (115970062845).

Almost surely, 2^481721799501 is an apocalyptic number.

It is an amenable number.

481721799501 is a deficient number, since it is larger than the sum of its proper divisors (214098577569).

481721799501 is a wasteful number, since it uses less digits than its factorization.

481721799501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53524644395 (or 53524644392 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 481721799501 in words is "four hundred eighty-one billion, seven hundred twenty-one million, seven hundred ninety-nine thousand, five hundred one".