1229159309759 has 4 divisors (see below), whose sum is σ = 1249309462440. Its totient is φ = 1209009157080.

The previous prime is 1229159309747. The next prime is 1229159309803. The reversal of 1229159309759 is 9579039519221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1229159309759 - 2²⁸ = 1228890874303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229159303759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10075076249 + ... + 10075076370.

It is an arithmetic number, because the mean of its divisors is an integer number (312327365610).

Almost surely, 2^{1229159309759} is an apocalyptic number.

1229159309759 is a deficient number, since it is larger than the sum of its proper divisors (20150152681).

1229159309759 is an equidigital number, since it uses as much as digits as its factorization.

1229159309759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20150152680.

The product of its (nonzero) digits is 13778100, while the sum is 62.

The spelling of 1229159309759 in words is "one trillion, two hundred twenty-nine billion, one hundred fifty-nine million, three hundred nine thousand, seven hundred fifty-nine".