18272240291395 has 16 divisors (see below), whose sum is σ = 21992654522880. Its totient is φ = 14573837325024.

The previous prime is 18272240291339. The next prime is 18272240291411. The reversal of 18272240291395 is 59319204227281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18272240291395 is a prime.

It is a super-2 number, since 2×18272240291395² (a number of 27 digits) contains 22 as substring.

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, 5087224 + ... + 7900906.

It is an arithmetic number, because the mean of its divisors is an integer number (1374540907680).

Almost surely, 2^{18272240291395} is an apocalyptic number.

18272240291395 is a deficient number, since it is larger than the sum of its proper divisors (3720414231485).

18272240291395 is a wasteful number, since it uses less digits than its factorization.

18272240291395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817594.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 18272240291395 in words is "eighteen trillion, two hundred seventy-two billion, two hundred forty million, two hundred ninety-one thousand, three hundred ninety-five".