138103508802 has 64 divisors (see below), whose sum is σ = 319540757760. Its totient is φ = 38974611456.

The previous prime is 138103508743. The next prime is 138103508819. The reversal of 138103508802 is 208805301831.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3708258 + ... + 3745314.

It is an arithmetic number, because the mean of its divisors is an integer number (4992824340).

Almost surely, 2^138103508802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138103508802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159770378880).

138103508802 is an abundant number, since it is smaller than the sum of its proper divisors (181437248958).

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

138103508802 is a wasteful number, since it uses less digits than its factorization.

138103508802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38155.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 138103508802 in words is "one hundred thirty-eight billion, one hundred three million, five hundred eight thousand, eight hundred two".