21180284372182 has 64 divisors (see below), whose sum is σ = 34781748019200. Its totient is φ = 9613880876160.

The previous prime is 21180284372153. The next prime is 21180284372237. The reversal of 21180284372182 is 28127348208112.

It is a super-2 number, since 2×21180284372182² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3484169419 + ... + 3484175497.

It is an arithmetic number, because the mean of its divisors is an integer number (543464812800).

Almost surely, 2^{21180284372182} is an apocalyptic number.

21180284372182 is a deficient number, since it is larger than the sum of its proper divisors (13601463647018).

21180284372182 is a wasteful number, since it uses less digits than its factorization.

21180284372182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101.

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 21180284372182 in words is "twenty-one trillion, one hundred eighty billion, two hundred eighty-four million, three hundred seventy-two thousand, one hundred eighty-two".