18198013141656 has 64 divisors (see below), whose sum is σ = 50550421910400. Its totient is φ = 6065958132000.

The previous prime is 18198013141621. The next prime is 18198013141673. The reversal of 18198013141656 is 65614131089181.

18198013141656 is a `hidden beast` number, since 1 + 8 + 1 + 98 + 0 + 131 + 416 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39447931 + ... + 39906581.

It is an arithmetic number, because the mean of its divisors is an integer number (789850342350).

Almost surely, 2^{18198013141656} is an apocalyptic number.

It is an amenable number.

18198013141656 is an abundant number, since it is smaller than the sum of its proper divisors (32352408768744).

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

18198013141656 is a wasteful number, since it uses less digits than its factorization.

18198013141656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642357 (or 642347 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 18198013141656 in words is "eighteen trillion, one hundred ninety-eight billion, thirteen million, one hundred forty-one thousand, six hundred fifty-six".