126945189165 has 8 divisors (see below), whose sum is σ = 203112302688. Its totient is φ = 67704100880.

The previous prime is 126945189103. The next prime is 126945189169. The reversal of 126945189165 is 561981549621.

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

It is not a de Polignac number, because 126945189165 - 2⁶ = 126945189101 is a prime.

It is a super-2 number, since 2×126945189165² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126945189169) 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, 4231506291 + ... + 4231506320.

It is an arithmetic number, because the mean of its divisors is an integer number (25389037836).

Almost surely, 2^126945189165 is an apocalyptic number.

126945189165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126945189165 is a deficient number, since it is larger than the sum of its proper divisors (76167113523).

126945189165 is an equidigital number, since it uses as much as digits as its factorization.

126945189165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8463012619.

The product of its digits is 4665600, while the sum is 57.

The spelling of 126945189165 in words is "one hundred twenty-six billion, nine hundred forty-five million, one hundred eighty-nine thousand, one hundred sixty-five".