20422464690 has 32 divisors (see below), whose sum is σ = 49024080000. Its totient is φ = 5444861184.

The previous prime is 20422464661. The next prime is 20422464731. The reversal of 20422464690 is 9646422402.

It is a super-2 number, since 2×20422464690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81882 + ... + 218058.

It is an arithmetic number, because the mean of its divisors is an integer number (1532002500).

Almost surely, 2^20422464690 is an apocalyptic number.

20422464690 is an abundant number, since it is smaller than the sum of its proper divisors (28601615310).

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

20422464690 is a wasteful number, since it uses less digits than its factorization.

20422464690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141186.

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 20422464690 in words is "twenty billion, four hundred twenty-two million, four hundred sixty-four thousand, six hundred ninety".