20632622143 has 4 divisors (see below), whose sum is σ = 23580139600. Its totient is φ = 17685104688.

The previous prime is 20632622137. The next prime is 20632622159. The reversal of 20632622143 is 34122623602.

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

It is a cyclic number.

It is not a de Polignac number, because 20632622143 - 2⁵ = 20632622111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20632622113) 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, 1473758718 + ... + 1473758731.

It is an arithmetic number, because the mean of its divisors is an integer number (5895034900).

Almost surely, 2^20632622143 is an apocalyptic number.

20632622143 is a deficient number, since it is larger than the sum of its proper divisors (2947517457).

20632622143 is an equidigital number, since it uses as much as digits as its factorization.

20632622143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947517456.

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 20632622143 in words is "twenty billion, six hundred thirty-two million, six hundred twenty-two thousand, one hundred forty-three".