12700091906 has 8 divisors (see below), whose sum is σ = 19074912780. Its totient is φ = 6341787648.

The previous prime is 12700091881. The next prime is 12700091939. The reversal of 12700091906 is 60919000721.

It can be written as a sum of positive squares in 2 ways, for example, as 12579641281 + 120450625 = 112159^2 + 10975^2 .

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

It is a super-2 number, since 2×12700091906² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4127231 + ... + 4130306.

Almost surely, 2^12700091906 is an apocalyptic number.

12700091906 is a deficient number, since it is larger than the sum of its proper divisors (6374820874).

12700091906 is an equidigital number, since it uses as much as digits as its factorization.

12700091906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258308.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 12700091906 in words is "twelve billion, seven hundred million, ninety-one thousand, nine hundred six".