20206086842 has 16 divisors (see below), whose sum is σ = 30666746880. Its totient is φ = 9984457728.

The previous prime is 20206086811. The next prime is 20206086847. The reversal of 20206086842 is 24868060202.

It is a junction number, because it is equal to n+sod(n) for n = 20206086796 and 20206086805.

It is not an unprimeable number, because it can be changed into a prime (20206086847) 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, 89492 + ... + 220047.

It is an arithmetic number, because the mean of its divisors is an integer number (1916671680).

Almost surely, 2^20206086842 is an apocalyptic number.

20206086842 is a deficient number, since it is larger than the sum of its proper divisors (10460660038).

20206086842 is a wasteful number, since it uses less digits than its factorization.

20206086842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309925.

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 20206086842 in words is "twenty billion, two hundred six million, eighty-six thousand, eight hundred forty-two".