20988223233963 has 32 divisors (see below), whose sum is σ = 28287138712320. Its totient is φ = 13841124111360.

The previous prime is 20988223233959. The next prime is 20988223233977. The reversal of 20988223233963 is 36933232288902.

It is not a de Polignac number, because 20988223233963 - 2² = 20988223233959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20988223233897 and 20988223233906.

It is not an unprimeable number, because it can be changed into a prime (20988223233983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 743958928 + ... + 743987138.

It is an arithmetic number, because the mean of its divisors is an integer number (883973084760).

Almost surely, 2^{20988223233963} is an apocalyptic number.

20988223233963 is a deficient number, since it is larger than the sum of its proper divisors (7298915478357).

20988223233963 is a wasteful number, since it uses less digits than its factorization.

20988223233963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31627.

The product of its (nonzero) digits is 40310784, while the sum is 60.

The spelling of 20988223233963 in words is "twenty trillion, nine hundred eighty-eight billion, two hundred twenty-three million, two hundred thirty-three thousand, nine hundred sixty-three".