23288166738 has 16 divisors (see below), whose sum is σ = 51751481760. Its totient is φ = 7762722228.

The previous prime is 23288166731. The next prime is 23288166749. The reversal of 23288166738 is 83766188232.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 431262347 = 23288166738 / (2 + 3 + 2 + 8 + 8 + 1 + 6 + 6 + 7 + 3 + 8).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23288166731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215631120 + ... + 215631227.

It is an arithmetic number, because the mean of its divisors is an integer number (3234467610).

Almost surely, 2^23288166738 is an apocalyptic number.

23288166738 is an abundant number, since it is smaller than the sum of its proper divisors (28463315022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23288166738 is a wasteful number, since it uses less digits than its factorization.

23288166738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431262358 (or 431262352 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 23288166738 in words is "twenty-three billion, two hundred eighty-eight million, one hundred sixty-six thousand, seven hundred thirty-eight".