20321075366 has 16 divisors (see below), whose sum is σ = 30814777728. Its totient is φ = 10049688000.

The previous prime is 20321075323. The next prime is 20321075371. The reversal of 20321075366 is 66357012302.

It is a super-2 number, since 2×20321075366² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 149426 + ... + 250938.

It is an arithmetic number, because the mean of its divisors is an integer number (1925923608).

Almost surely, 2^20321075366 is an apocalyptic number.

20321075366 is a deficient number, since it is larger than the sum of its proper divisors (10493702362).

20321075366 is a wasteful number, since it uses less digits than its factorization.

20321075366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102607.

The product of its (nonzero) digits is 45360, while the sum is 35.

Adding to 20321075366 its reverse (66357012302), we get a palindrome (86678087668).

The spelling of 20321075366 in words is "twenty billion, three hundred twenty-one million, seventy-five thousand, three hundred sixty-six".