18272240291384 has 16 divisors (see below), whose sum is σ = 34265806348200. Its totient is φ = 9134691931872.

The previous prime is 18272240291339. The next prime is 18272240291411. The reversal of 18272240291384 is 48319204227281.

It is a super-3 number, since 3×18272240291384³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

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, 178472354 + ... + 178574705.

Almost surely, 2^{18272240291384} is an apocalyptic number.

It is an amenable number.

18272240291384 is a deficient number, since it is larger than the sum of its proper divisors (15993566056816).

18272240291384 is a wasteful number, since it uses less digits than its factorization.

18272240291384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357053462 (or 357053458 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 18272240291384 in words is "eighteen trillion, two hundred seventy-two billion, two hundred forty million, two hundred ninety-one thousand, three hundred eighty-four".