2138363668394 has 16 divisors (see below), whose sum is σ = 3313447623936. Its totient is φ = 1033931812800.

The previous prime is 2138363668393. The next prime is 2138363668417. The reversal of 2138363668394 is 4938663638312.

It is a super-3 number, since 3×2138363668394³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is not an unprimeable number, because it can be changed into a prime (2138363668393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12586352 + ... + 12755115.

It is an arithmetic number, because the mean of its divisors is an integer number (207090476496).

Almost surely, 2^{2138363668394} is an apocalyptic number.

2138363668394 is a deficient number, since it is larger than the sum of its proper divisors (1175083955542).

2138363668394 is a wasteful number, since it uses less digits than its factorization.

2138363668394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25342861.

The product of its digits is 80621568, while the sum is 62.

The spelling of 2138363668394 in words is "two trillion, one hundred thirty-eight billion, three hundred sixty-three million, six hundred sixty-eight thousand, three hundred ninety-four".