20066535560 has 32 divisors (see below), whose sum is σ = 45251663040. Its totient is φ = 8008488384.

The previous prime is 20066535527. The next prime is 20066535571. The reversal of 20066535560 is 6553566002.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548492 + ... + 583931.

It is an arithmetic number, because the mean of its divisors is an integer number (1414114470).

Almost surely, 2^20066535560 is an apocalyptic number.

20066535560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20066535560 is an abundant number, since it is smaller than the sum of its proper divisors (25185127480).

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

20066535560 is a wasteful number, since it uses less digits than its factorization.

20066535560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132877 (or 1132873 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 20066535560 in words is "twenty billion, sixty-six million, five hundred thirty-five thousand, five hundred sixty".