23538485081 has 2 divisors, whose sum is σ = 23538485082. Its totient is φ = 23538485080.

The previous prime is 23538485077. The next prime is 23538485147. The reversal of 23538485081 is 18058483532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20076339481 + 3462145600 = 141691^2 + 58840^2 .

It is a cyclic number.

It is not a de Polignac number, because 23538485081 - 2² = 23538485077 is a prime.

It is a super-2 number, since 2×23538485081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23538485021) 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 as a sum of consecutive naturals, namely, 11769242540 + 11769242541.

It is an arithmetic number, because the mean of its divisors is an integer number (11769242541).

Almost surely, 2^23538485081 is an apocalyptic number.

It is an amenable number.

23538485081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23538485081 is an equidigital number, since it uses as much as digits as its factorization.

23538485081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 23538485081 in words is "twenty-three billion, five hundred thirty-eight million, four hundred eighty-five thousand, eighty-one".