138635846416 has 20 divisors (see below), whose sum is σ = 275866600972. Its totient is φ = 67444465536.

The previous prime is 138635846353. The next prime is 138635846497. The reversal of 138635846416 is 614648536831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70169890816 + 68465955600 = 264896^2 + 261660^2 .

It is a super-2 number, since 2×138635846416² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117090495 + ... + 117091678.

Almost surely, 2^138635846416 is an apocalyptic number.

138635846416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138635846416 is a deficient number, since it is larger than the sum of its proper divisors (137230754556).

138635846416 is a wasteful number, since it uses less digits than its factorization.

138635846416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234182218 (or 234182212 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 55.

The spelling of 138635846416 in words is "one hundred thirty-eight billion, six hundred thirty-five million, eight hundred forty-six thousand, four hundred sixteen".