18835700216855 has 16 divisors (see below), whose sum is σ = 22829172840000. Its totient is φ = 14917705017600.

The previous prime is 18835700216833. The next prime is 18835700216857. The reversal of 18835700216855 is 55861200753881.

It is a happy number.

It is not a de Polignac number, because 18835700216855 - 2¹² = 18835700212759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18835700216794 and 18835700216803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18835700216857) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2472131 + ... + 6616859.

It is an arithmetic number, because the mean of its divisors is an integer number (1426823302500).

Almost surely, 2^{18835700216855} is an apocalyptic number.

18835700216855 is a deficient number, since it is larger than the sum of its proper divisors (3993472623145).

18835700216855 is a wasteful number, since it uses less digits than its factorization.

18835700216855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153834.

The product of its (nonzero) digits is 16128000, while the sum is 59.

The spelling of 18835700216855 in words is "eighteen trillion, eight hundred thirty-five billion, seven hundred million, two hundred sixteen thousand, eight hundred fifty-five".