2129140517409 has 24 divisors (see below), whose sum is σ = 3082605664320. Its totient is φ = 1416116001888.

The previous prime is 2129140517407. The next prime is 2129140517411. The reversal of 2129140517409 is 9047150419212.

2129140517409 is a `hidden beast` number, since 2 + 1 + 2 + 91 + 4 + 0 + 517 + 40 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (2129140517407) and next prime (2129140517411).

It is not a de Polignac number, because 2129140517409 - 2¹ = 2129140517407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2129140517401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8310772 + ... + 8563130.

It is an arithmetic number, because the mean of its divisors is an integer number (128441902680).

Almost surely, 2^{2129140517409} is an apocalyptic number.

It is an amenable number.

2129140517409 is a deficient number, since it is larger than the sum of its proper divisors (953465146911).

2129140517409 is a wasteful number, since it uses less digits than its factorization.

2129140517409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254549 (or 254546 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 2129140517409 in words is "two trillion, one hundred twenty-nine billion, one hundred forty million, five hundred seventeen thousand, four hundred nine".