20066846820 has 48 divisors (see below), whose sum is σ = 56226730560. Its totient is φ = 5347391616.

The previous prime is 20066846797. The next prime is 20066846831. The reversal of 20066846820 is 2864866002.

It is a super-2 number, since 2×20066846820² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 31282 + ... + 202761.

It is an arithmetic number, because the mean of its divisors is an integer number (1171390220).

Almost surely, 2^20066846820 is an apocalyptic number.

20066846820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20066846820 is an abundant number, since it is smaller than the sum of its proper divisors (36159883740).

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

20066846820 is a wasteful number, since it uses less digits than its factorization.

20066846820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235484 (or 235482 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 20066846820 in words is "twenty billion, sixty-six million, eight hundred forty-six thousand, eight hundred twenty".