23890745651 has 2 divisors, whose sum is σ = 23890745652. Its totient is φ = 23890745650.

The previous prime is 23890745611. The next prime is 23890745653. The reversal of 23890745651 is 15654709832.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23890745651 is a prime.

Together with 23890745653, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23890745651.

It is not a weakly prime, because it can be changed into another prime (23890745653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11945372825 + 11945372826.

It is an arithmetic number, because the mean of its divisors is an integer number (11945372826).

It is a 1-persistent number, because it is pandigital, but 2⋅23890745651 = 47781491302 is not.

Almost surely, 2^23890745651 is an apocalyptic number.

23890745651 is a deficient number, since it is larger than the sum of its proper divisors (1).

23890745651 is an equidigital number, since it uses as much as digits as its factorization.

23890745651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 23890745651 in words is "twenty-three billion, eight hundred ninety million, seven hundred forty-five thousand, six hundred fifty-one".