18203747740168 has 32 divisors (see below), whose sum is σ = 34262295248160. Its totient is φ = 9067201534720.

The previous prime is 18203747740151. The next prime is 18203747740237. The reversal of 18203747740168 is 86104774730281.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904305 + ... + 6327232.

It is an arithmetic number, because the mean of its divisors is an integer number (1070696726505).

Almost surely, 2^{18203747740168} is an apocalyptic number.

It is an amenable number.

18203747740168 is a deficient number, since it is larger than the sum of its proper divisors (16058547507992).

18203747740168 is a wasteful number, since it uses less digits than its factorization.

18203747740168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232597 (or 8232593 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 18203747740168 in words is "eighteen trillion, two hundred three billion, seven hundred forty-seven million, seven hundred forty thousand, one hundred sixty-eight".