138831277043 has 2 divisors, whose sum is σ = 138831277044. Its totient is φ = 138831277042.

The previous prime is 138831277033. The next prime is 138831277051. The reversal of 138831277043 is 340772138831.

It is a strong prime.

It is an emirp because it is prime and its reverse (340772138831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138831277043 - 2¹² = 138831272947 is a prime.

It is not a weakly prime, because it can be changed into another prime (138831277033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69415638521 + 69415638522.

It is an arithmetic number, because the mean of its divisors is an integer number (69415638522).

Almost surely, 2^138831277043 is an apocalyptic number.

138831277043 is a deficient number, since it is larger than the sum of its proper divisors (1).

138831277043 is an equidigital number, since it uses as much as digits as its factorization.

138831277043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 138831277043 in words is "one hundred thirty-eight billion, eight hundred thirty-one million, two hundred seventy-seven thousand, forty-three".