23365994409 has 12 divisors (see below), whose sum is σ = 33754929156. Its totient is φ = 15575461152.

The previous prime is 23365994387. The next prime is 23365994419. The reversal of 23365994409 is 90449956332.

23365994409 is a `hidden beast` number, since 2 + 3 + 3 + 6 + 599 + 4 + 40 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5121549225 + 18244445184 = 71565^2 + 135072^2 .

It is not a de Polignac number, because 23365994409 - 2⁹ = 23365993897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23365994419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74262 + ... + 228575.

It is an arithmetic number, because the mean of its divisors is an integer number (2812910763).

Almost surely, 2^23365994409 is an apocalyptic number.

It is an amenable number.

23365994409 is a deficient number, since it is larger than the sum of its proper divisors (10388934747).

23365994409 is a wasteful number, since it uses less digits than its factorization.

23365994409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311416 (or 311413 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 54.

The spelling of 23365994409 in words is "twenty-three billion, three hundred sixty-five million, nine hundred ninety-four thousand, four hundred nine".