18366358389402 has 32 divisors (see below), whose sum is σ = 38893650550272. Its totient is φ = 5761967273984.

The previous prime is 18366358389383. The next prime is 18366358389413. The reversal of 18366358389402 is 20498385366381.

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, 36558538 + ... + 37057514.

It is an arithmetic number, because the mean of its divisors is an integer number (1215426579696).

Almost surely, 2^{18366358389402} is an apocalyptic number.

18366358389402 is an abundant number, since it is smaller than the sum of its proper divisors (20527292160870).

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

18366358389402 is a wasteful number, since it uses less digits than its factorization.

18366358389402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859862.

The product of its (nonzero) digits is 179159040, while the sum is 66.

The spelling of 18366358389402 in words is "eighteen trillion, three hundred sixty-six billion, three hundred fifty-eight million, three hundred eighty-nine thousand, four hundred two".