138776852739 has 32 divisors (see below), whose sum is σ = 229780111360. Its totient is φ = 72703850400.

The previous prime is 138776852729. The next prime is 138776852749. The reversal of 138776852739 is 937258677831.

It is a happy number.

138776852739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138776852729) and next prime (138776852749).

It is not a de Polignac number, because 138776852739 - 2⁴ = 138776852723 is a prime.

It is a super-2 number, since 2×138776852739² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138776852739.

It is not an unprimeable number, because it can be changed into a prime (138776852719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5597497 + ... + 5622234.

It is an arithmetic number, because the mean of its divisors is an integer number (7180628480).

Almost surely, 2^138776852739 is an apocalyptic number.

138776852739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

138776852739 is a deficient number, since it is larger than the sum of its proper divisors (91003258621).

138776852739 is a wasteful number, since it uses less digits than its factorization.

138776852739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219791.

The product of its digits is 106686720, while the sum is 66.

The spelling of 138776852739 in words is "one hundred thirty-eight billion, seven hundred seventy-six million, eight hundred fifty-two thousand, seven hundred thirty-nine".