20842015086 has 24 divisors (see below), whose sum is σ = 45160540464. Its totient is φ = 6946901280.

The previous prime is 20842015081. The next prime is 20842015091. The reversal of 20842015086 is 68051024802.

20842015086 is a `hidden beast` number, since 2 + 0 + 8 + 420 + 150 + 86 = 666.

20842015086 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (20842015081) and next prime (20842015091).

It is a self number, because there is not a number n which added to its sum of digits gives 20842015086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20842015081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397050 + ... + 446466.

It is an arithmetic number, because the mean of its divisors is an integer number (1881689186).

Almost surely, 2^20842015086 is an apocalyptic number.

20842015086 is an abundant number, since it is smaller than the sum of its proper divisors (24318525378).

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

20842015086 is a wasteful number, since it uses less digits than its factorization.

20842015086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72856 (or 72853 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 20842015086 its reverse (68051024802), we get a palindrome (88893039888).

The spelling of 20842015086 in words is "twenty billion, eight hundred forty-two million, fifteen thousand, eighty-six".