20660802030 has 120 divisors (see below), whose sum is σ = 61064437896. Its totient is φ = 5008655520.

The previous prime is 20660802007. The next prime is 20660802031. The reversal of 20660802030 is 3020806602.

20660802030 is a `hidden beast` number, since 2 + 0 + 6 + 608 + 0 + 20 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20660801985 and 20660802003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660802031) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 7392 + ... + 203411.

Almost surely, 2^20660802030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20660802030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30532218948).

20660802030 is an abundant number, since it is smaller than the sum of its proper divisors (40403635866).

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

20660802030 is a wasteful number, since it uses less digits than its factorization.

20660802030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210844 (or 210824 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 20660802030 in words is "twenty billion, six hundred sixty million, eight hundred two thousand, thirty".