20623643092 has 48 divisors (see below), whose sum is σ = 41208571152. Its totient is φ = 8946800640.

The previous prime is 20623643077. The next prime is 20623643093. The reversal of 20623643092 is 29034632602.

It can be written as a sum of positive squares in 8 ways, for example, as 2226518596 + 18397124496 = 47186^2 + 135636^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20623643093) 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, 668242 + ... + 698422.

It is an arithmetic number, because the mean of its divisors is an integer number (858511899).

Almost surely, 2^20623643092 is an apocalyptic number.

It is an amenable number.

20623643092 is a deficient number, since it is larger than the sum of its proper divisors (20584928060).

20623643092 is a wasteful number, since it uses less digits than its factorization.

20623643092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30988 (or 30986 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 20623643092 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, ninety-two".