23695061521 has 2 divisors, whose sum is σ = 23695061522. Its totient is φ = 23695061520.

The previous prime is 23695061503. The next prime is 23695061561. The reversal of 23695061521 is 12516059632.

It is an a-pointer prime, because the next prime (23695061561) can be obtained adding 23695061521 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22511701521 + 1183360000 = 150039^2 + 34400^2 .

It is a cyclic number.

It is not a de Polignac number, because 23695061521 - 2¹⁷ = 23694930449 is a prime.

It is a super-2 number, since 2×23695061521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23695061561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11847530760 + 11847530761.

It is an arithmetic number, because the mean of its divisors is an integer number (11847530761).

Almost surely, 2^23695061521 is an apocalyptic number.

It is an amenable number.

23695061521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23695061521 is an equidigital number, since it uses as much as digits as its factorization.

23695061521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 23695061521 in words is "twenty-three billion, six hundred ninety-five million, sixty-one thousand, five hundred twenty-one".