20405451422 has 4 divisors (see below), whose sum is σ = 30608177136. Its totient is φ = 10202725710.

The previous prime is 20405451389. The next prime is 20405451467. The reversal of 20405451422 is 22415450402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101362854 + ... + 5101362857.

It is an arithmetic number, because the mean of its divisors is an integer number (7652044284).

Almost surely, 2^20405451422 is an apocalyptic number.

20405451422 is a deficient number, since it is larger than the sum of its proper divisors (10202725714).

20405451422 is a wasteful number, since it uses less digits than its factorization.

20405451422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202725713.

The product of its (nonzero) digits is 12800, while the sum is 29.

The spelling of 20405451422 in words is "twenty billion, four hundred five million, four hundred fifty-one thousand, four hundred twenty-two".