20563213362 has 32 divisors (see below), whose sum is σ = 43560078912. Its totient is φ = 6449063424.

The previous prime is 20563213339. The next prime is 20563213381. The reversal of 20563213362 is 26331236502.

It is a super-2 number, since 2×20563213362² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 290758 + ... + 354494.

It is an arithmetic number, because the mean of its divisors is an integer number (1361252466).

Almost surely, 2^20563213362 is an apocalyptic number.

20563213362 is an abundant number, since it is smaller than the sum of its proper divisors (22996865550).

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

20563213362 is a wasteful number, since it uses less digits than its factorization.

20563213362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66922.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 20563213362 its reverse (26331236502), we get a palindrome (46894449864).

The spelling of 20563213362 in words is "twenty billion, five hundred sixty-three million, two hundred thirteen thousand, three hundred sixty-two".