20608278352 has 40 divisors (see below), whose sum is σ = 42421782600. Its totient is φ = 9679928832.

The previous prime is 20608278347. The next prime is 20608278367. The reversal of 20608278352 is 25387280602.

It can be written as a sum of positive squares in 4 ways, for example, as 1752594496 + 18855683856 = 41864^2 + 137316^2 .

It is a super-2 number, since 2×20608278352² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20608278299 and 20608278308.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 583027 + ... + 617362.

It is an arithmetic number, because the mean of its divisors is an integer number (1060544565).

Almost surely, 2^20608278352 is an apocalyptic number.

It is an amenable number.

20608278352 is an abundant number, since it is smaller than the sum of its proper divisors (21813504248).

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

20608278352 is a wasteful number, since it uses less digits than its factorization.

20608278352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200463 (or 1200457 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 20608278352 in words is "twenty billion, six hundred eight million, two hundred seventy-eight thousand, three hundred fifty-two".