20642363036 has 12 divisors (see below), whose sum is σ = 36130120320. Its totient is φ = 10319471520.

The previous prime is 20642363023. The next prime is 20642363047. The reversal of 20642363036 is 63036324602.

It is a super-2 number, since 2×20642363036² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20642362987 and 20642363005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400145 + ... + 448776.

It is an arithmetic number, because the mean of its divisors is an integer number (3010843360).

Almost surely, 2^20642363036 is an apocalyptic number.

It is an amenable number.

20642363036 is a deficient number, since it is larger than the sum of its proper divisors (15487757284).

20642363036 is a wasteful number, since it uses less digits than its factorization.

20642363036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855004 (or 855002 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 20642363036 its reverse (63036324602), we get a palindrome (83678687638).

The spelling of 20642363036 in words is "twenty billion, six hundred forty-two million, three hundred sixty-three thousand, thirty-six".