138416838354 has 48 divisors (see below), whose sum is σ = 328494343320. Its totient is φ = 41927477760.

The previous prime is 138416838319. The next prime is 138416838377. The reversal of 138416838354 is 453838614831.

It can be written as a sum of positive squares in 4 ways, for example, as 138363912729 + 52925625 = 371973^2 + 7275^2 .

It is a super-2 number, since 2×138416838354² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138416838354.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7790137 + ... + 7807884.

Almost surely, 2^138416838354 is an apocalyptic number.

138416838354 is an abundant number, since it is smaller than the sum of its proper divisors (190077504966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138416838354 is a wasteful number, since it uses less digits than its factorization.

138416838354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15598075 (or 15598072 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 138416838354 in words is "one hundred thirty-eight billion, four hundred sixteen million, eight hundred thirty-eight thousand, three hundred fifty-four".