23691064321 has 2 divisors, whose sum is σ = 23691064322. Its totient is φ = 23691064320.

The previous prime is 23691064303. The next prime is 23691064333. The reversal of 23691064321 is 12346019632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17712681921 + 5978382400 = 133089^2 + 77320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23691064321 is a prime.

It is a super-2 number, since 2×23691064321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23691064301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11845532160 + 11845532161.

It is an arithmetic number, because the mean of its divisors is an integer number (11845532161).

Almost surely, 2^23691064321 is an apocalyptic number.

It is an amenable number.

23691064321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23691064321 is an equidigital number, since it uses as much as digits as its factorization.

23691064321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 23691064321 in words is "twenty-three billion, six hundred ninety-one million, sixty-four thousand, three hundred twenty-one".