20654404122 has 32 divisors (see below), whose sum is σ = 45070764480. Its totient is φ = 6257992320.

The previous prime is 20654404109. The next prime is 20654404123. The reversal of 20654404122 is 22140445602.

It is a self number, because there is not a number n which added to its sum of digits gives 20654404122.

It is not an unprimeable number, because it can be changed into a prime (20654404123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530928 + ... + 568500.

It is an arithmetic number, because the mean of its divisors is an integer number (1408461390).

Almost surely, 2^20654404122 is an apocalyptic number.

20654404122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20654404122 is an abundant number, since it is smaller than the sum of its proper divisors (24416360358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20654404122 is a wasteful number, since it uses less digits than its factorization.

20654404122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45918.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 20654404122 its reverse (22140445602), we get a palindrome (42794849724).

The spelling of 20654404122 in words is "twenty billion, six hundred fifty-four million, four hundred four thousand, one hundred twenty-two".