13541440020 has 48 divisors (see below), whose sum is σ = 38537616768. Its totient is φ = 3551852160.

The previous prime is 13541440019. The next prime is 13541440027. The reversal of 13541440020 is 2004414531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13541440027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846264 + ... + 1853583.

It is an arithmetic number, because the mean of its divisors is an integer number (802867016).

Almost surely, 2^13541440020 is an apocalyptic number.

13541440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13541440020 is an abundant number, since it is smaller than the sum of its proper divisors (24996176748).

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

13541440020 is a wasteful number, since it uses less digits than its factorization.

13541440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699920 (or 3699918 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 13541440020 its reverse (2004414531), we get a palindrome (15545854551).

The spelling of 13541440020 in words is "thirteen billion, five hundred forty-one million, four hundred forty thousand, twenty".