138835243364 has 12 divisors (see below), whose sum is σ = 243596043264. Its totient is φ = 69236373864.

The previous prime is 138835243363. The next prime is 138835243397. The reversal of 138835243364 is 463342538831.

It is a happy number.

It is a super-2 number, since 2×138835243364² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138835243363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45310232 + ... + 45313295.

It is an arithmetic number, because the mean of its divisors is an integer number (20299670272).

Almost surely, 2^138835243364 is an apocalyptic number.

It is an amenable number.

138835243364 is a deficient number, since it is larger than the sum of its proper divisors (104760799900).

138835243364 is a wasteful number, since it uses less digits than its factorization.

138835243364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90623914 (or 90623912 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 50.

The spelling of 138835243364 in words is "one hundred thirty-eight billion, eight hundred thirty-five million, two hundred forty-three thousand, three hundred sixty-four".