18267868543308 has 12 divisors (see below), whose sum is σ = 42625026601080. Its totient is φ = 6089289514432.

The previous prime is 18267868543291. The next prime is 18267868543313. The reversal of 18267868543308 is 80334586876281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18267868543308² (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 3 ways as a sum of consecutive naturals, for example, 761161189293 + ... + 761161189316.

It is an arithmetic number, because the mean of its divisors is an integer number (3552085550090).

Almost surely, 2^{18267868543308} is an apocalyptic number.

It is an amenable number.

18267868543308 is an abundant number, since it is smaller than the sum of its proper divisors (24357158057772).

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

18267868543308 is a wasteful number, since it uses less digits than its factorization.

18267868543308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522322378616 (or 1522322378614 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 69.

The spelling of 18267868543308 in words is "eighteen trillion, two hundred sixty-seven billion, eight hundred sixty-eight million, five hundred forty-three thousand, three hundred eight".