2129894906433 has 32 divisors (see below), whose sum is σ = 3253217126400. Its totient is φ = 1214209920000.

The previous prime is 2129894906417. The next prime is 2129894906443. The reversal of 2129894906433 is 3346094989212.

It is not a de Polignac number, because 2129894906433 - 2⁴ = 2129894906417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2129894906443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129649966 + ... + 129666392.

It is an arithmetic number, because the mean of its divisors is an integer number (101663035200).

Almost surely, 2^{2129894906433} is an apocalyptic number.

It is an amenable number.

2129894906433 is a deficient number, since it is larger than the sum of its proper divisors (1123322219967).

2129894906433 is a wasteful number, since it uses less digits than its factorization.

2129894906433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30637.

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 2129894906433 in words is "two trillion, one hundred twenty-nine billion, eight hundred ninety-four million, nine hundred six thousand, four hundred thirty-three".