138317497351 has 16 divisors (see below), whose sum is σ = 152024745600. Its totient is φ = 124799637600.

The previous prime is 138317497327. The next prime is 138317497379. The reversal of 138317497351 is 153794713831.

It is not a de Polignac number, because 138317497351 - 2⁵ = 138317497319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138317497151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5631285 + ... + 5655793.

It is an arithmetic number, because the mean of its divisors is an integer number (9501546600).

Almost surely, 2^138317497351 is an apocalyptic number.

138317497351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138317497351 is a deficient number, since it is larger than the sum of its proper divisors (13707248249).

138317497351 is a wasteful number, since it uses less digits than its factorization.

138317497351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28350.

The product of its digits is 1905120, while the sum is 52.

The spelling of 138317497351 in words is "one hundred thirty-eight billion, three hundred seventeen million, four hundred ninety-seven thousand, three hundred fifty-one".