20013250462540 has 24 divisors (see below), whose sum is σ = 42033133517760. Its totient is φ = 8004289223808.

The previous prime is 20013250462537. The next prime is 20013250462613. The reversal of 20013250462540 is 4526405231002.

It is a junction number, because it is equal to n+sod(n) for n = 20013250462496 and 20013250462505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63022737 + ... + 63339496.

It is an arithmetic number, because the mean of its divisors is an integer number (1751380563240).

Almost surely, 2^{20013250462540} is an apocalyptic number.

20013250462540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013250462540 is an abundant number, since it is smaller than the sum of its proper divisors (22019883055220).

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

20013250462540 is a wasteful number, since it uses less digits than its factorization.

20013250462540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126370161 (or 126370159 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 20013250462540 its reverse (4526405231002), we get a palindrome (24539655693542).

The spelling of 20013250462540 in words is "twenty trillion, thirteen billion, two hundred fifty million, four hundred sixty-two thousand, five hundred forty".