20623643162 has 4 divisors (see below), whose sum is σ = 30935464746. Its totient is φ = 10311821580.

The previous prime is 20623643153. The next prime is 20623643321. The reversal of 20623643162 is 26134632602.

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., 11170164721 + 9453478441 = 105689^2 + 97229^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155910789 + ... + 5155910792.

Almost surely, 2^20623643162 is an apocalyptic number.

20623643162 is a deficient number, since it is larger than the sum of its proper divisors (10311821584).

20623643162 is a wasteful number, since it uses less digits than its factorization.

20623643162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311821583.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 20623643162 in words is "twenty billion, six hundred twenty-three million, six hundred forty-three thousand, one hundred sixty-two".