18231142704 has 20 divisors (see below), whose sum is σ = 47097118776. Its totient is φ = 6077047552.

The previous prime is 18231142693. The next prime is 18231142747. The reversal of 18231142704 is 40724113281.

It is a super-2 number, since 2×18231142704² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189907689 + ... + 189907784.

Almost surely, 2^18231142704 is an apocalyptic number.

It is an amenable number.

18231142704 is an abundant number, since it is smaller than the sum of its proper divisors (28865976072).

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

18231142704 is a wasteful number, since it uses less digits than its factorization.

18231142704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379815484 (or 379815478 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

Adding to 18231142704 its reverse (40724113281), we get a palindrome (58955255985).

The spelling of 18231142704 in words is "eighteen billion, two hundred thirty-one million, one hundred forty-two thousand, seven hundred four".