206795554380 has 144 divisors (see below), whose sum is σ = 654805831680. Its totient is φ = 52727469696.

The previous prime is 206795554379. The next prime is 206795554397. The reversal of 206795554380 is 83455597602.

206795554380 is a `hidden beast` number, since 2 + 0 + 6 + 7 + 9 + 5 + 554 + 3 + 80 = 666.

It is a super-2 number, since 2×206795554380² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12738949 + ... + 12755171.

It is an arithmetic number, because the mean of its divisors is an integer number (4547262720).

Almost surely, 2^206795554380 is an apocalyptic number.

206795554380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206795554380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327402915840).

206795554380 is an abundant number, since it is smaller than the sum of its proper divisors (448010277300).

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

206795554380 is a wasteful number, since it uses less digits than its factorization.

206795554380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19340 (or 19335 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 206795554380 in words is "two hundred six billion, seven hundred ninety-five million, five hundred fifty-four thousand, three hundred eighty".