20840868701886 has 32 divisors (see below), whose sum is σ = 42569649704448. Its totient is φ = 6798978259200.

The previous prime is 20840868701831. The next prime is 20840868701903. The reversal of 20840868701886 is 68810786804802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10600221 + ... + 12411543.

It is an arithmetic number, because the mean of its divisors is an integer number (1330301553264).

Almost surely, 2^{20840868701886} is an apocalyptic number.

20840868701886 is an abundant number, since it is smaller than the sum of its proper divisors (21728781002562).

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

20840868701886 is a wasteful number, since it uses less digits than its factorization.

20840868701886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852176.

The product of its (nonzero) digits is 66060288, while the sum is 66.

The spelling of 20840868701886 in words is "twenty trillion, eight hundred forty billion, eight hundred sixty-eight million, seven hundred one thousand, eight hundred eighty-six".