20522323402 has 16 divisors (see below), whose sum is σ = 35185248000. Its totient is φ = 8794250928.

The previous prime is 20522323399. The next prime is 20522323417. The reversal of 20522323402 is 20432322502.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44724 + ... + 207472.

It is an arithmetic number, because the mean of its divisors is an integer number (2199078000).

Almost surely, 2^20522323402 is an apocalyptic number.

20522323402 is a deficient number, since it is larger than the sum of its proper divisors (14662924598).

20522323402 is a wasteful number, since it uses less digits than its factorization.

20522323402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171765.

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20522323402 its reverse (20432322502), we get a palindrome (40954645904).

The spelling of 20522323402 in words is "twenty billion, five hundred twenty-two million, three hundred twenty-three thousand, four hundred two".