20010113540 has 12 divisors (see below), whose sum is σ = 42021238476. Its totient is φ = 8004045408.

The previous prime is 20010113533. The next prime is 20010113569. The reversal of 20010113540 is 4531101002.

It can be written as a sum of positive squares in 2 ways, for example, as 2442731776 + 17567381764 = 49424^2 + 132542^2 .

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, 500252819 + ... + 500252858.

It is an arithmetic number, because the mean of its divisors is an integer number (3501769873).

Almost surely, 2^20010113540 is an apocalyptic number.

20010113540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010113540 is an abundant number, since it is smaller than the sum of its proper divisors (22011124936).

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

20010113540 is a wasteful number, since it uses less digits than its factorization.

20010113540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000505686 (or 1000505684 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 20010113540 its reverse (4531101002), we get a palindrome (24541214542).

The spelling of 20010113540 in words is "twenty billion, ten million, one hundred thirteen thousand, five hundred forty".