20422404612 has 60 divisors (see below), whose sum is σ = 53482510620. Its totient is φ = 6795442944.

The previous prime is 20422404601. The next prime is 20422404637. The reversal of 20422404612 is 21640422402.

20422404612 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 2 + 40 + 4 + 612 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2598552576 + 17823852036 = 50976^2 + 133506^2 .

It is a super-2 number, since 2×20422404612² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 128968 + ... + 239744.

It is an arithmetic number, because the mean of its divisors is an integer number (891375177).

Almost surely, 2^20422404612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20422404612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26741255310).

20422404612 is an abundant number, since it is smaller than the sum of its proper divisors (33060106008).

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

20422404612 is a wasteful number, since it uses less digits than its factorization.

20422404612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111362 (or 111351 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The spelling of 20422404612 in words is "twenty billion, four hundred twenty-two million, four hundred four thousand, six hundred twelve".