23126656220 has 24 divisors (see below), whose sum is σ = 48650172144. Its totient is φ = 9234625536.

The previous prime is 23126656207. The next prime is 23126656237. The reversal of 23126656220 is 2265662132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990482 + ... + 1013561.

It is an arithmetic number, because the mean of its divisors is an integer number (2027090506).

Almost surely, 2^23126656220 is an apocalyptic number.

23126656220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23126656220 is an abundant number, since it is smaller than the sum of its proper divisors (25523515924).

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

23126656220 is a wasteful number, since it uses less digits than its factorization.

23126656220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004629 (or 2004627 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 23126656220 in words is "twenty-three billion, one hundred twenty-six million, six hundred fifty-six thousand, two hundred twenty".