20522345002 has 4 divisors (see below), whose sum is σ = 30783517506. Its totient is φ = 10261172500.

The previous prime is 20522344993. The next prime is 20522345017. The reversal of 20522345002 is 20054322502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19054765521 + 1467579481 = 138039^2 + 38309^2 .

It is a super-2 number, since 2×20522345002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5130586249 + ... + 5130586252.

Almost surely, 2^20522345002 is an apocalyptic number.

20522345002 is a deficient number, since it is larger than the sum of its proper divisors (10261172504).

20522345002 is a wasteful number, since it uses less digits than its factorization.

20522345002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10261172503.

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 20522345002 its reverse (20054322502), we get a palindrome (40576667504).

The spelling of 20522345002 in words is "twenty billion, five hundred twenty-two million, three hundred forty-five thousand, two".