2129807942659 has 12 divisors (see below), whose sum is σ = 2226596957032. Its totient is φ = 2037058848000.

The previous prime is 2129807942641. The next prime is 2129807942671. The reversal of 2129807942659 is 9562497089212.

It is a happy number.

It is not a de Polignac number, because 2129807942659 - 2⁵ = 2129807942627 is a prime.

It is a super-2 number, since 2×2129807942659² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2129807942659.

It is not an unprimeable number, because it can be changed into a prime (2129807942609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7478344 + ... + 7757914.

Almost surely, 2^{2129807942659} is an apocalyptic number.

2129807942659 is a deficient number, since it is larger than the sum of its proper divisors (96789014373).

2129807942659 is a wasteful number, since it uses less digits than its factorization.

2129807942659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294018 (or 293995 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 2129807942659 in words is "two trillion, one hundred twenty-nine billion, eight hundred seven million, nine hundred forty-two thousand, six hundred fifty-nine".