23401387567 has 2 divisors, whose sum is σ = 23401387568. Its totient is φ = 23401387566.

The previous prime is 23401387501. The next prime is 23401387577. The reversal of 23401387567 is 76578310432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23401387567 - 2³¹ = 21253903919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23401387577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700693783 + 11700693784.

It is an arithmetic number, because the mean of its divisors is an integer number (11700693784).

Almost surely, 2^23401387567 is an apocalyptic number.

23401387567 is a deficient number, since it is larger than the sum of its proper divisors (1).

23401387567 is an equidigital number, since it uses as much as digits as its factorization.

23401387567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

Adding to 23401387567 its reverse (76578310432), we get a palindrome (99979697999).

The spelling of 23401387567 in words is "twenty-three billion, four hundred one million, three hundred eighty-seven thousand, five hundred sixty-seven".