126931870689 has 8 divisors (see below), whose sum is σ = 182261147712. Its totient is φ = 78111920400.

The previous prime is 126931870673. The next prime is 126931870733. The reversal of 126931870689 is 986078139621.

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

It is not a de Polignac number, because 126931870689 - 2⁴ = 126931870673 is a prime.

It is a super-2 number, since 2×126931870689² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126931870619) 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, 1627331637 + ... + 1627331714.

It is an arithmetic number, because the mean of its divisors is an integer number (22782643464).

Almost surely, 2^126931870689 is an apocalyptic number.

It is an amenable number.

126931870689 is a deficient number, since it is larger than the sum of its proper divisors (55329277023).

126931870689 is a wasteful number, since it uses less digits than its factorization.

126931870689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254663367.

The product of its (nonzero) digits is 7838208, while the sum is 60.

The spelling of 126931870689 in words is "one hundred twenty-six billion, nine hundred thirty-one million, eight hundred seventy thousand, six hundred eighty-nine".