23528039375681 has 2 divisors, whose sum is σ = 23528039375682. Its totient is φ = 23528039375680.

The previous prime is 23528039375677. The next prime is 23528039375693. The reversal of 23528039375681 is 18657393082532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22849920065281 + 678119310400 = 4780159^2 + 823480^2 .

It is a cyclic number.

It is not a de Polignac number, because 23528039375681 - 2² = 23528039375677 is a prime.

It is a super-2 number, since 2×23528039375681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23528039375381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11764019687840 + 11764019687841.

It is an arithmetic number, because the mean of its divisors is an integer number (11764019687841).

Almost surely, 2^{23528039375681} is an apocalyptic number.

It is an amenable number.

23528039375681 is a deficient number, since it is larger than the sum of its proper divisors (1).

23528039375681 is an equidigital number, since it uses as much as digits as its factorization.

23528039375681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 23528039375681 in words is "twenty-three trillion, five hundred twenty-eight billion, thirty-nine million, three hundred seventy-five thousand, six hundred eighty-one".