138035726455723 has 8 divisors (see below), whose sum is σ = 139122285603840. Its totient is φ = 136950502970280.

The previous prime is 138035726455661. The next prime is 138035726455931. The reversal of 138035726455723 is 327554627530831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138035726455723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138035726456723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333708163 + ... + 334121548.

It is an arithmetic number, because the mean of its divisors is an integer number (17390285700480).

Almost surely, 2^{138035726455723} is an apocalyptic number.

138035726455723 is a deficient number, since it is larger than the sum of its proper divisors (1086559148117).

138035726455723 is a wasteful number, since it uses less digits than its factorization.

138035726455723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667831337.

The product of its (nonzero) digits is 127008000, while the sum is 61.

The spelling of 138035726455723 in words is "one hundred thirty-eight trillion, thirty-five billion, seven hundred twenty-six million, four hundred fifty-five thousand, seven hundred twenty-three".