138790946816 has 48 divisors (see below), whose sum is σ = 289580054400. Its totient is φ = 66378256384.

The previous prime is 138790946813. The next prime is 138790946941. The reversal of 138790946816 is 618649097831.

It is not an unprimeable number, because it can be changed into a prime (138790946813) 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, 1426136 + ... + 1520343.

It is an arithmetic number, because the mean of its divisors is an integer number (6032917800).

Almost surely, 2^138790946816 is an apocalyptic number.

138790946816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138790946816 is an abundant number, since it is smaller than the sum of its proper divisors (150789107584).

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

138790946816 is an equidigital number, since it uses as much as digits as its factorization.

138790946816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946524 (or 2946504 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 138790946816 in words is "one hundred thirty-eight billion, seven hundred ninety million, nine hundred forty-six thousand, eight hundred sixteen".