20060806864 has 80 divisors (see below), whose sum is σ = 44807632128. Its totient is φ = 8522827776.

The previous prime is 20060806823. The next prime is 20060806867. The reversal of 20060806864 is 46860806002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20060806867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8097594 + ... + 8100070.

Almost surely, 2^20060806864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20060806864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22403816064).

20060806864 is an abundant number, since it is smaller than the sum of its proper divisors (24746825264).

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

20060806864 is a wasteful number, since it uses less digits than its factorization.

20060806864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092 (or 3086 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 20060806864 in words is "twenty billion, sixty million, eight hundred six thousand, eight hundred sixty-four".