20681611132 has 48 divisors (see below), whose sum is σ = 46481766912. Its totient is φ = 7826005440.

The previous prime is 20681611051. The next prime is 20681611147. The reversal of 20681611132 is 23111618602.

It is a super-3 number, since 3×20681611132³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20681611094 and 20681611103.

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, 1226794 + ... + 1243537.

It is an arithmetic number, because the mean of its divisors is an integer number (968370144).

Almost surely, 2^20681611132 is an apocalyptic number.

It is an amenable number.

20681611132 is an abundant number, since it is smaller than the sum of its proper divisors (25800155780).

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

20681611132 is a wasteful number, since it uses less digits than its factorization.

20681611132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470378 (or 2470376 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 20681611132 in words is "twenty billion, six hundred eighty-one million, six hundred eleven thousand, one hundred thirty-two".