138545646736 has 40 divisors (see below), whose sum is σ = 322925948480. Its totient is φ = 56251615104.

The previous prime is 138545646719. The next prime is 138545646749. The reversal of 138545646736 is 637646545831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32550891 + ... + 32555146.

It is an arithmetic number, because the mean of its divisors is an integer number (8073148712).

Almost surely, 2^138545646736 is an apocalyptic number.

138545646736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138545646736 is an abundant number, since it is smaller than the sum of its proper divisors (184380301744).

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

138545646736 is a wasteful number, since it uses less digits than its factorization.

138545646736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65106071 (or 65106065 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 58.

The spelling of 138545646736 in words is "one hundred thirty-eight billion, five hundred forty-five million, six hundred forty-six thousand, seven hundred thirty-six".