20622389751 has 8 divisors (see below), whose sum is σ = 30551688560. Its totient is φ = 13748259816.

The previous prime is 20622389747. The next prime is 20622389759. The reversal of 20622389751 is 15798322602.

It is not a de Polignac number, because 20622389751 - 2² = 20622389747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20622389697 and 20622389706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20622389759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381896080 + ... + 381896133.

It is an arithmetic number, because the mean of its divisors is an integer number (3818961070).

Almost surely, 2^20622389751 is an apocalyptic number.

20622389751 is a deficient number, since it is larger than the sum of its proper divisors (9929298809).

20622389751 is an equidigital number, since it uses as much as digits as its factorization.

20622389751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763792222 (or 763792216 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 20622389751 in words is "twenty billion, six hundred twenty-two million, three hundred eighty-nine thousand, seven hundred fifty-one".