138326857502210 has 32 divisors (see below), whose sum is σ = 268166148934320. Its totient is φ = 51069797538048.

The previous prime is 138326857502191. The next prime is 138326857502237. The reversal of 138326857502210 is 12205758623831.

It can be written as a sum of positive squares in 8 ways, for example, as 35097010578529 + 103229846923681 = 5924273^2 + 10160209^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47909357 + ... + 50714496.

Almost surely, 2^{138326857502210} is an apocalyptic number.

138326857502210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138326857502210 is a deficient number, since it is larger than the sum of its proper divisors (129839291432110).

138326857502210 is a wasteful number, since it uses less digits than its factorization.

138326857502210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98634662.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 138326857502210 in words is "one hundred thirty-eight trillion, three hundred twenty-six billion, eight hundred fifty-seven million, five hundred two thousand, two hundred ten".