2129842950886 has 16 divisors (see below), whose sum is σ = 3740212012320. Its totient is φ = 890526669120.

The previous prime is 2129842950883. The next prime is 2129842950919. The reversal of 2129842950886 is 6880592489212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129842950881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855263321 + ... + 1855264468.

It is an arithmetic number, because the mean of its divisors is an integer number (233763250770).

Almost surely, 2^{2129842950886} is an apocalyptic number.

2129842950886 is a deficient number, since it is larger than the sum of its proper divisors (1610369061434).

2129842950886 is a wasteful number, since it uses less digits than its factorization.

2129842950886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710527839.

The product of its (nonzero) digits is 39813120, while the sum is 64.

It can be divided in two parts, 212984 and 2950886, that added together give a triangular number (3163870 = T₂₅₁₅).

The spelling of 2129842950886 in words is "two trillion, one hundred twenty-nine billion, eight hundred forty-two million, nine hundred fifty thousand, eight hundred eighty-six".