20513442322 has 4 divisors (see below), whose sum is σ = 30770163486. Its totient is φ = 10256721160.

The previous prime is 20513442269. The next prime is 20513442337. The reversal of 20513442322 is 22324431502.

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., 19354652641 + 1158789681 = 139121^2 + 34041^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5128360579 + ... + 5128360582.

Almost surely, 2^20513442322 is an apocalyptic number.

20513442322 is a deficient number, since it is larger than the sum of its proper divisors (10256721164).

20513442322 is a wasteful number, since it uses less digits than its factorization.

20513442322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256721163.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20513442322 its reverse (22324431502), we get a palindrome (42837873824).

It can be divided in two parts, 205134 and 42322, that added together give a triangular number (247456 = T₇₀₃).

The spelling of 20513442322 in words is "twenty billion, five hundred thirteen million, four hundred forty-two thousand, three hundred twenty-two".