2129969987802 has 32 divisors (see below), whose sum is σ = 4939060844160. Its totient is φ = 679120865280.

The previous prime is 2129969987801. The next prime is 2129969987833. The reversal of 2129969987802 is 2087899699212.

It is not an unprimeable number, because it can be changed into a prime (2129969987801) 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 15 ways as a sum of consecutive naturals, for example, 857474599 + ... + 857477082.

It is an arithmetic number, because the mean of its divisors is an integer number (154345651380).

Almost surely, 2^{2129969987802} is an apocalyptic number.

2129969987802 is an abundant number, since it is smaller than the sum of its proper divisors (2809090856358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2129969987802 is a wasteful number, since it uses less digits than its factorization.

2129969987802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714951715 (or 1714951709 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 72.

The spelling of 2129969987802 in words is "two trillion, one hundred twenty-nine billion, nine hundred sixty-nine million, nine hundred eighty-seven thousand, eight hundred two".