138167327657 has 4 divisors (see below), whose sum is σ = 138168604560. Its totient is φ = 138166050756.

The previous prime is 138167327651. The next prime is 138167327659. The reversal of 138167327657 is 756723761831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138167327657 - 2⁶ = 138167327593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138167327651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459407 + ... + 698132.

It is an arithmetic number, because the mean of its divisors is an integer number (34542151140).

Almost surely, 2^138167327657 is an apocalyptic number.

It is an amenable number.

138167327657 is a deficient number, since it is larger than the sum of its proper divisors (1276903).

138167327657 is a wasteful number, since it uses less digits than its factorization.

138167327657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276902.

The product of its digits is 8890560, while the sum is 56.

The spelling of 138167327657 in words is "one hundred thirty-eight billion, one hundred sixty-seven million, three hundred twenty-seven thousand, six hundred fifty-seven".