126291291289 has 8 divisors (see below), whose sum is σ = 126373178048. Its totient is φ = 126209437200.

The previous prime is 126291291283. The next prime is 126291291323. The reversal of 126291291289 is 982192192621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 126291291289 - 2³³ = 117701356697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126291291283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15180559 + ... + 15188875.

It is an arithmetic number, because the mean of its divisors is an integer number (15796647256).

Almost surely, 2^126291291289 is an apocalyptic number.

It is an amenable number.

126291291289 is a deficient number, since it is larger than the sum of its proper divisors (81886759).

126291291289 is an equidigital number, since it uses as much as digits as its factorization.

126291291289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16335.

The product of its digits is 559872, while the sum is 52.

The spelling of 126291291289 in words is "one hundred twenty-six billion, two hundred ninety-one million, two hundred ninety-one thousand, two hundred eighty-nine".