20733807756 has 12 divisors (see below), whose sum is σ = 48378884792. Its totient is φ = 6911269248.

The previous prime is 20733807737. The next prime is 20733807761. The reversal of 20733807756 is 65770833702.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863908645 + ... + 863908668.

Almost surely, 2^20733807756 is an apocalyptic number.

It is an amenable number.

20733807756 is an abundant number, since it is smaller than the sum of its proper divisors (27645077036).

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

20733807756 is a wasteful number, since it uses less digits than its factorization.

20733807756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727817320 (or 1727817318 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 20733807756 in words is "twenty billion, seven hundred thirty-three million, eight hundred seven thousand, seven hundred fifty-six".