20380532866 has 8 divisors (see below), whose sum is σ = 30636262800. Its totient is φ = 10168445268.

The previous prime is 20380532831. The next prime is 20380532867. The reversal of 20380532866 is 66823508302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20380532866² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20380532867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10909416 + ... + 10911283.

It is an arithmetic number, because the mean of its divisors is an integer number (3829532850).

Almost surely, 2^20380532866 is an apocalyptic number.

20380532866 is a deficient number, since it is larger than the sum of its proper divisors (10255729934).

20380532866 is a wasteful number, since it uses less digits than its factorization.

20380532866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21821168.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20380532866 in words is "twenty billion, three hundred eighty million, five hundred thirty-two thousand, eight hundred sixty-six".