2129807942660 has 12 divisors (see below), whose sum is σ = 4472596679628. Its totient is φ = 851923177056.

The previous prime is 2129807942641. The next prime is 2129807942671. The reversal of 2129807942660 is 662497089212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 395882572864 + 1733925369796 = 629192^2 + 1316786^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2129807942596 and 2129807942605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53245198547 + ... + 53245198586.

It is an arithmetic number, because the mean of its divisors is an integer number (372716389969).

Almost surely, 2^{2129807942660} is an apocalyptic number.

2129807942660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2129807942660 is an abundant number, since it is smaller than the sum of its proper divisors (2342788736968).

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

2129807942660 is a wasteful number, since it uses less digits than its factorization.

2129807942660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106490397142 (or 106490397140 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 2129807942660 in words is "two trillion, one hundred twenty-nine billion, eight hundred seven million, nine hundred forty-two thousand, six hundred sixty".