2129819806497 has 32 divisors (see below), whose sum is σ = 2966637772800. Its totient is φ = 1357409938752.

The previous prime is 2129819806487. The next prime is 2129819806511. The reversal of 2129819806497 is 7946089189212.

It is not a de Polignac number, because 2129819806497 - 2⁷ = 2129819806369 is a prime.

It is a super-2 number, since 2×2129819806497² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2129819806417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83709904 + ... + 83735342.

It is an arithmetic number, because the mean of its divisors is an integer number (92707430400).

Almost surely, 2^{2129819806497} is an apocalyptic number.

It is an amenable number.

2129819806497 is a deficient number, since it is larger than the sum of its proper divisors (836817966303).

2129819806497 is a wasteful number, since it uses less digits than its factorization.

2129819806497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34917.

The product of its (nonzero) digits is 31352832, while the sum is 66.

The spelling of 2129819806497 in words is "two trillion, one hundred twenty-nine billion, eight hundred nineteen million, eight hundred six thousand, four hundred ninety-seven".