23151122109 has 16 divisors (see below), whose sum is σ = 36103115200. Its totient is φ = 14621761008.

The previous prime is 23151122101. The next prime is 23151122117. The reversal of 23151122109 is 90122115132.

23151122109 is a `hidden beast` number, since 23 + 1 + 511 + 22 + 109 = 666.

It is an interprime number because it is at equal distance from previous prime (23151122101) and next prime (23151122117).

It is not a de Polignac number, because 23151122109 - 2³ = 23151122101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151122101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22563934 + ... + 22564959.

It is an arithmetic number, because the mean of its divisors is an integer number (2256444700).

Almost surely, 2^23151122109 is an apocalyptic number.

It is an amenable number.

23151122109 is a deficient number, since it is larger than the sum of its proper divisors (12951993091).

23151122109 is a wasteful number, since it uses less digits than its factorization.

23151122109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45128921 (or 45128915 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 23151122109 in words is "twenty-three billion, one hundred fifty-one million, one hundred twenty-two thousand, one hundred nine".