138216602943 has 12 divisors (see below), whose sum is σ = 200841692688. Its totient is φ = 91592638080.

The previous prime is 138216602939. The next prime is 138216602963. The reversal of 138216602943 is 349206612831.

138216602943 is a `hidden beast` number, since 1 + 38 + 2 + 1 + 6 + 602 + 9 + 4 + 3 = 666.

It is not a de Polignac number, because 138216602943 - 2² = 138216602939 is a prime.

It is a super-2 number, since 2×138216602943² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138216602903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45978738 + ... + 45981743.

It is an arithmetic number, because the mean of its divisors is an integer number (16736807724).

Almost surely, 2^138216602943 is an apocalyptic number.

138216602943 is a deficient number, since it is larger than the sum of its proper divisors (62625089745).

138216602943 is a wasteful number, since it uses less digits than its factorization.

138216602943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91960654 (or 91960651 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 138216602943 in words is "one hundred thirty-eight billion, two hundred sixteen million, six hundred two thousand, nine hundred forty-three".