2129894906432 has 14 divisors (see below), whose sum is σ = 4226510205078. Its totient is φ = 1064947453184.

The previous prime is 2129894906417. The next prime is 2129894906443. The reversal of 2129894906432 is 2346094989212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1910211466816 + 219683439616 = 1382104^2 + 468704^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16639803893 + ... + 16639804020.

It is an arithmetic number, because the mean of its divisors is an integer number (301893586077).

Almost surely, 2^{2129894906432} is an apocalyptic number.

It is an amenable number.

2129894906432 is a deficient number, since it is larger than the sum of its proper divisors (2096615298646).

2129894906432 is an equidigital number, since it uses as much as digits as its factorization.

2129894906432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33279607925 (or 33279607915 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 2129894906432 in words is "two trillion, one hundred twenty-nine billion, eight hundred ninety-four million, nine hundred six thousand, four hundred thirty-two".