481111139581 has 2 divisors, whose sum is σ = 481111139582. Its totient is φ = 481111139580.

The previous prime is 481111139569. The next prime is 481111139609. The reversal of 481111139581 is 185931111184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468484122681 + 12627016900 = 684459^2 + 112370^2 .

It is a cyclic number.

It is not a de Polignac number, because 481111139581 - 2³³ = 472521204989 is a prime.

It is a super-2 number, since 2×481111139581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481111139281) 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 as a sum of consecutive naturals, namely, 240555569790 + 240555569791.

It is an arithmetic number, because the mean of its divisors is an integer number (240555569791).

Almost surely, 2^481111139581 is an apocalyptic number.

It is an amenable number.

481111139581 is a deficient number, since it is larger than the sum of its proper divisors (1).

481111139581 is an equidigital number, since it uses as much as digits as its factorization.

481111139581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 43.

The spelling of 481111139581 in words is "four hundred eighty-one billion, one hundred eleven million, one hundred thirty-nine thousand, five hundred eighty-one".