18879885715202 has 6 divisors (see below), whose sum is σ = 28319837790153. Its totient is φ = 9439939785152.

The previous prime is 18879885715157. The next prime is 18879885715217. The reversal of 18879885715202 is 20251758897881.

It can be written as a sum of positive squares in 2 ways, for example, as 18855126378001 + 24759337201 = 4342249^2 + 157351^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3072449.

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 4608674 + ... + 7681122.

Almost surely, 2^{18879885715202} is an apocalyptic number.

18879885715202 is a deficient number, since it is larger than the sum of its proper divisors (9439952074951).

18879885715202 is an frugal number, since it uses more digits than its factorization.

18879885715202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144900 (or 3072451 counting only the distinct ones).

The product of its (nonzero) digits is 180633600, while the sum is 71.

The spelling of 18879885715202 in words is "eighteen trillion, eight hundred seventy-nine billion, eight hundred eighty-five million, seven hundred fifteen thousand, two hundred two".