218402040382 has 32 divisors (see below), whose sum is σ = 358018237440. Its totient is φ = 99527387520.

The previous prime is 218402040371. The next prime is 218402040391. The reversal of 218402040382 is 283040204812.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678094 + ... + 946897.

It is an arithmetic number, because the mean of its divisors is an integer number (11188069920).

Almost surely, 2^218402040382 is an apocalyptic number.

218402040382 is a deficient number, since it is larger than the sum of its proper divisors (139616197058).

218402040382 is a wasteful number, since it uses less digits than its factorization.

218402040382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625136.

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 218402040382 in words is "two hundred eighteen billion, four hundred two million, forty thousand, three hundred eighty-two".