20332311132 has 48 divisors (see below), whose sum is σ = 54872762112. Its totient is φ = 5739239040.

The previous prime is 20332311091. The next prime is 20332311149. The reversal of 20332311132 is 23111323302.

It is a super-2 number, since 2×20332311132² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20332311099 and 20332311108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1451169 + ... + 1465112.

It is an arithmetic number, because the mean of its divisors is an integer number (1143182544).

Almost surely, 2^20332311132 is an apocalyptic number.

It is an amenable number.

20332311132 is an abundant number, since it is smaller than the sum of its proper divisors (34540450980).

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

20332311132 is a wasteful number, since it uses less digits than its factorization.

20332311132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916378 (or 2916376 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20332311132 its reverse (23111323302), we get a palindrome (43443634434).

The spelling of 20332311132 in words is "twenty billion, three hundred thirty-two million, three hundred eleven thousand, one hundred thirty-two".