20663213534075 has 48 divisors (see below), whose sum is σ = 30831050257920. Its totient is φ = 13420216235520.

The previous prime is 20663213534053. The next prime is 20663213534077. The reversal of 20663213534075 is 57043531236602.

It is not a de Polignac number, because 20663213534075 - 2²⁴ = 20663196756859 is a prime.

It is a super-2 number, since 2×20663213534075² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20663213534077) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13704074 + ... + 15136976.

It is an arithmetic number, because the mean of its divisors is an integer number (642313547040).

Almost surely, 2^{20663213534075} is an apocalyptic number.

20663213534075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20663213534075 is a deficient number, since it is larger than the sum of its proper divisors (10167836723845).

20663213534075 is a wasteful number, since it uses less digits than its factorization.

20663213534075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437276 (or 1437271 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 20663213534075 in words is "twenty trillion, six hundred sixty-three billion, two hundred thirteen million, five hundred thirty-four thousand, seventy-five".