23506633919 has 2 divisors, whose sum is σ = 23506633920. Its totient is φ = 23506633918.

The previous prime is 23506633889. The next prime is 23506633933. The reversal of 23506633919 is 91933660532.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23506633919 - 2³² = 19211666623 is a prime.

It is a super-2 number, since 2×23506633919² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23506633979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11753316959 + 11753316960.

It is an arithmetic number, because the mean of its divisors is an integer number (11753316960).

Almost surely, 2^23506633919 is an apocalyptic number.

23506633919 is a deficient number, since it is larger than the sum of its proper divisors (1).

23506633919 is an equidigital number, since it uses as much as digits as its factorization.

23506633919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 47.

The spelling of 23506633919 in words is "twenty-three billion, five hundred six million, six hundred thirty-three thousand, nine hundred nineteen".