20495430722 has 30 divisors (see below), whose sum is σ = 33360679023. Its totient is φ = 9443637528.

The previous prime is 20495430713. The next prime is 20495430749. The reversal of 20495430722 is 22703459402.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 358801 + 20495071921 = 599^2 + 143161^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=101231.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 34215779 + ... + 34216377.

Almost surely, 2^20495430722 is an apocalyptic number.

20495430722 is a deficient number, since it is larger than the sum of its proper divisors (12865248301).

20495430722 is an frugal number, since it uses more digits than its factorization.

20495430722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20495430722 in words is "twenty billion, four hundred ninety-five million, four hundred thirty thousand, seven hundred twenty-two".