4020200565660 has 36 divisors (see below), whose sum is σ = 12194608383048. Its totient is φ = 1072053484128.

The previous prime is 4020200565649. The next prime is 4020200565743. The reversal of 4020200565660 is 665650020204.

4020200565660 is a `hidden beast` number, since 4 + 0 + 20 + 20 + 0 + 56 + 566 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11167223614 + ... + 11167223973.

Almost surely, 2^{4020200565660} is an apocalyptic number.

It is an amenable number.

4020200565660 is an abundant number, since it is smaller than the sum of its proper divisors (8174407817388).

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

4020200565660 is a wasteful number, since it uses less digits than its factorization.

4020200565660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22334447602 (or 22334447597 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 4020200565660 its reverse (665650020204), we get a palindrome (4685850585864).

The spelling of 4020200565660 in words is "four trillion, twenty billion, two hundred million, five hundred sixty-five thousand, six hundred sixty".