2215185672018 has 16 divisors (see below), whose sum is σ = 4833132375456. Its totient is φ = 671268385440.

The previous prime is 2215185671953. The next prime is 2215185672043. The reversal of 2215185672018 is 8102765815122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16781709571 + ... + 16781709702.

It is an arithmetic number, because the mean of its divisors is an integer number (302070773466).

Almost surely, 2^{2215185672018} is an apocalyptic number.

2215185672018 is an abundant number, since it is smaller than the sum of its proper divisors (2617946703438).

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

2215185672018 is a wasteful number, since it uses less digits than its factorization.

2215185672018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33563419289.

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 2215185672018 in words is "two trillion, two hundred fifteen billion, one hundred eighty-five million, six hundred seventy-two thousand, eighteen".