20522445402 has 16 divisors (see below), whose sum is σ = 41257560960. Its totient is φ = 6805370112.

The previous prime is 20522445371. The next prime is 20522445413. The reversal of 20522445402 is 20454422502.

It is a self number, because there is not a number n which added to its sum of digits gives 20522445402.

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, 8860002 + ... + 8862317.

It is an arithmetic number, because the mean of its divisors is an integer number (2578597560).

Almost surely, 2^20522445402 is an apocalyptic number.

20522445402 is an abundant number, since it is smaller than the sum of its proper divisors (20735115558).

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

20522445402 is a wasteful number, since it uses less digits than its factorization.

20522445402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17722517.

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 20522445402 its reverse (20454422502), we get a palindrome (40976867904).

The spelling of 20522445402 in words is "twenty billion, five hundred twenty-two million, four hundred forty-five thousand, four hundred two".