23115402442501 has 2 divisors, whose sum is σ = 23115402442502. Its totient is φ = 23115402442500.

The previous prime is 23115402442499. The next prime is 23115402442591. The reversal of 23115402442501 is 10524420451132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13049542132225 + 10065860310276 = 3612415^2 + 3172674^2 .

It is a cyclic number.

It is not a de Polignac number, because 23115402442501 - 2¹ = 23115402442499 is a prime.

It is a super-2 number, since 2×23115402442501² (a number of 28 digits) contains 22 as substring.

Together with 23115402442499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23115402442591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11557701221250 + 11557701221251.

It is an arithmetic number, because the mean of its divisors is an integer number (11557701221251).

Almost surely, 2^{23115402442501} is an apocalyptic number.

It is an amenable number.

23115402442501 is a deficient number, since it is larger than the sum of its proper divisors (1).

23115402442501 is an equidigital number, since it uses as much as digits as its factorization.

23115402442501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 23115402442501 its reverse (10524420451132), we get a palindrome (33639822893633).

The spelling of 23115402442501 in words is "twenty-three trillion, one hundred fifteen billion, four hundred two million, four hundred forty-two thousand, five hundred one".