138177487853 has 2 divisors, whose sum is σ = 138177487854. Its totient is φ = 138177487852.

The previous prime is 138177487843. The next prime is 138177487907. The reversal of 138177487853 is 358784771831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130221383044 + 7956104809 = 360862^2 + 89197^2 .

It is a cyclic number.

It is not a de Polignac number, because 138177487853 - 2⁸ = 138177487597 is a prime.

It is a super-3 number, since 3×138177487853³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138177487843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69088743926 + 69088743927.

It is an arithmetic number, because the mean of its divisors is an integer number (69088743927).

Almost surely, 2^138177487853 is an apocalyptic number.

It is an amenable number.

138177487853 is a deficient number, since it is larger than the sum of its proper divisors (1).

138177487853 is an equidigital number, since it uses as much as digits as its factorization.

138177487853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31610880, while the sum is 62.

The spelling of 138177487853 in words is "one hundred thirty-eight billion, one hundred seventy-seven million, four hundred eighty-seven thousand, eight hundred fifty-three".