206545776020 has 48 divisors (see below), whose sum is σ = 443893177728. Its totient is φ = 80686058880.

The previous prime is 206545776007. The next prime is 206545776029. The reversal of 206545776020 is 20677545602.

It is a super-2 number, since 2×206545776020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206545776029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9833930 + ... + 9854910.

It is an arithmetic number, because the mean of its divisors is an integer number (9247774536).

Almost surely, 2^206545776020 is an apocalyptic number.

206545776020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206545776020 is an abundant number, since it is smaller than the sum of its proper divisors (237347401708).

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

206545776020 is a wasteful number, since it uses less digits than its factorization.

206545776020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32480 (or 32478 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 206545776020 in words is "two hundred six billion, five hundred forty-five million, seven hundred seventy-six thousand, twenty".