18836686720342 has 16 divisors (see below), whose sum is σ = 28471051224000. Its totient is φ = 9346337998920.

The previous prime is 18836686720307. The next prime is 18836686720361. The reversal of 18836686720342 is 24302768663881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24846409 + ... + 25593307.

It is an arithmetic number, because the mean of its divisors is an integer number (1779440701500).

Almost surely, 2^{18836686720342} is an apocalyptic number.

18836686720342 is a deficient number, since it is larger than the sum of its proper divisors (9634364503658).

18836686720342 is a wasteful number, since it uses less digits than its factorization.

18836686720342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843291.

The product of its (nonzero) digits is 111476736, while the sum is 64.

The spelling of 18836686720342 in words is "eighteen trillion, eight hundred thirty-six billion, six hundred eighty-six million, seven hundred twenty thousand, three hundred forty-two".