20623381082 has 4 divisors (see below), whose sum is σ = 30935071626. Its totient is φ = 10311690540.

The previous prime is 20623381081. The next prime is 20623381127. The reversal of 20623381082 is 28018332602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11493769681 + 9129611401 = 107209^2 + 95549^2 .

It is not an unprimeable number, because it can be changed into a prime (20623381081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155845269 + ... + 5155845272.

Almost surely, 2^20623381082 is an apocalyptic number.

20623381082 is a deficient number, since it is larger than the sum of its proper divisors (10311690544).

20623381082 is a wasteful number, since it uses less digits than its factorization.

20623381082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311690543.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 20623381082 in words is "twenty billion, six hundred twenty-three million, three hundred eighty-one thousand, eighty-two".