23144574140 has 24 divisors (see below), whose sum is σ = 48626959920. Its totient is φ = 9253381248.

The previous prime is 23144574133. The next prime is 23144574143. The reversal of 23144574140 is 4147544132.

It is a self number, because there is not a number n which added to its sum of digits gives 23144574140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144574143) by changing a digit.

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, 235202 + ... + 318761.

It is an arithmetic number, because the mean of its divisors is an integer number (2026123330).

Almost surely, 2^23144574140 is an apocalyptic number.

23144574140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23144574140 is an abundant number, since it is smaller than the sum of its proper divisors (25482385780).

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

23144574140 is a wasteful number, since it uses less digits than its factorization.

23144574140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556061 (or 556059 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 23144574140 in words is "twenty-three billion, one hundred forty-four million, five hundred seventy-four thousand, one hundred forty".