138831277051 has 2 divisors, whose sum is σ = 138831277052. Its totient is φ = 138831277050.

The previous prime is 138831277043. The next prime is 138831277111. The reversal of 138831277051 is 150772138831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138831277051 - 2³ = 138831277043 is a prime.

It is a super-2 number, since 2×138831277051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138831276992 and 138831277010.

It is not a weakly prime, because it can be changed into another prime (138831277001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69415638525 + 69415638526.

It is an arithmetic number, because the mean of its divisors is an integer number (69415638526).

Almost surely, 2^138831277051 is an apocalyptic number.

138831277051 is a deficient number, since it is larger than the sum of its proper divisors (1).

138831277051 is an equidigital number, since it uses as much as digits as its factorization.

138831277051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 138831277051 in words is "one hundred thirty-eight billion, eight hundred thirty-one million, two hundred seventy-seven thousand, fifty-one".