23915219693 has 16 divisors (see below), whose sum is σ = 26056648944. Its totient is φ = 21857771520.

The previous prime is 23915219683. The next prime is 23915219711. The reversal of 23915219693 is 39691251932.

It can be written as a sum of positive squares in 8 ways, for example, as 99940009 + 23815279684 = 9997^2 + 154322^2 .

It is a cyclic number.

It is not a de Polignac number, because 23915219693 - 2¹⁰ = 23915218669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23915219633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291221 + ... + 364197.

It is an arithmetic number, because the mean of its divisors is an integer number (1628540559).

Almost surely, 2^23915219693 is an apocalyptic number.

It is an amenable number.

23915219693 is a deficient number, since it is larger than the sum of its proper divisors (2141429251).

23915219693 is a wasteful number, since it uses less digits than its factorization.

23915219693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73552.

The product of its digits is 787320, while the sum is 50.

The spelling of 23915219693 in words is "twenty-three billion, nine hundred fifteen million, two hundred nineteen thousand, six hundred ninety-three".