23954143238 has 32 divisors (see below), whose sum is σ = 37683360000. Its totient is φ = 11406821760.

The previous prime is 23954143219. The next prime is 23954143243. The reversal of 23954143238 is 83234145932.

It is a super-2 number, since 2×23954143238² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995048 + ... + 1018836.

It is an arithmetic number, because the mean of its divisors is an integer number (1177605000).

Almost surely, 2^23954143238 is an apocalyptic number.

23954143238 is a deficient number, since it is larger than the sum of its proper divisors (13729216762).

23954143238 is a wasteful number, since it uses less digits than its factorization.

23954143238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24080.

The product of its digits is 622080, while the sum is 44.

The spelling of 23954143238 in words is "twenty-three billion, nine hundred fifty-four million, one hundred forty-three thousand, two hundred thirty-eight".