48166529581 has 2 divisors, whose sum is σ = 48166529582. Its totient is φ = 48166529580.

The previous prime is 48166529569. The next prime is 48166529629. The reversal of 48166529581 is 18592566184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45963072100 + 2203457481 = 214390^2 + 46941^2 .

It is a cyclic number.

It is not a de Polignac number, because 48166529581 - 2⁹ = 48166529069 is a prime.

It is a super-2 number, since 2×48166529581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48166529881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24083264790 + 24083264791.

It is an arithmetic number, because the mean of its divisors is an integer number (24083264791).

Almost surely, 2^48166529581 is an apocalyptic number.

It is an amenable number.

48166529581 is a deficient number, since it is larger than the sum of its proper divisors (1).

48166529581 is an equidigital number, since it uses as much as digits as its factorization.

48166529581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 55.

The spelling of 48166529581 in words is "forty-eight billion, one hundred sixty-six million, five hundred twenty-nine thousand, five hundred eighty-one".