20481140084 has 12 divisors (see below), whose sum is σ = 36082546500. Its totient is φ = 10171841088.

The previous prime is 20481140063. The next prime is 20481140107. The reversal of 20481140084 is 48004118402.

It can be written as a sum of positive squares in 2 ways, for example, as 830707684 + 19650432400 = 28822^2 + 140180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20481140084.

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, 17181569 + ... + 17182760.

It is an arithmetic number, because the mean of its divisors is an integer number (3006878875).

Almost surely, 2^20481140084 is an apocalyptic number.

It is an amenable number.

20481140084 is a deficient number, since it is larger than the sum of its proper divisors (15601406416).

20481140084 is a wasteful number, since it uses less digits than its factorization.

20481140084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34364482 (or 34364480 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

Adding to 20481140084 its reverse (48004118402), we get a palindrome (68485258486).

The spelling of 20481140084 in words is "twenty billion, four hundred eighty-one million, one hundred forty thousand, eighty-four".