18072344356 has 12 divisors (see below), whose sum is σ = 34501748400. Its totient is φ = 8214701960.

The previous prime is 18072344351. The next prime is 18072344371. The reversal of 18072344356 is 65344327081.

It is not an unprimeable number, because it can be changed into a prime (18072344351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205367506 + ... + 205367593.

It is an arithmetic number, because the mean of its divisors is an integer number (2875145700).

Almost surely, 2^18072344356 is an apocalyptic number.

It is an amenable number.

18072344356 is a deficient number, since it is larger than the sum of its proper divisors (16429404044).

18072344356 is a wasteful number, since it uses less digits than its factorization.

18072344356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410735114 (or 410735112 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 18072344356 in words is "eighteen billion, seventy-two million, three hundred forty-four thousand, three hundred fifty-six".