20287592430626 has 16 divisors (see below), whose sum is σ = 31011005332728. Its totient is φ = 9950657808000.

The previous prime is 20287592430587. The next prime is 20287592430653. The reversal of 20287592430626 is 62603429578202.

It is a Cunningham number, because it is equal to 4504175²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 17211255336025 + 3076337094601 = 4148645^2 + 1753949^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16181555 + ... + 17390166.

Almost surely, 2^{20287592430626} is an apocalyptic number.

20287592430626 is a deficient number, since it is larger than the sum of its proper divisors (10723412902102).

20287592430626 is a wasteful number, since it uses less digits than its factorization.

20287592430626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33577477.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 20287592430626 in words is "twenty trillion, two hundred eighty-seven billion, five hundred ninety-two million, four hundred thirty thousand, six hundred twenty-six".