13501420140 has 144 divisors (see below), whose sum is σ = 43090790400. Its totient is φ = 3148464384.

The previous prime is 13501420129. The next prime is 13501420183. The reversal of 13501420140 is 4102410531.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157621 + ... + 227699.

It is an arithmetic number, because the mean of its divisors is an integer number (299241600).

Almost surely, 2^13501420140 is an apocalyptic number.

13501420140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13501420140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21545395200).

13501420140 is an abundant number, since it is smaller than the sum of its proper divisors (29589370260).

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

13501420140 is a wasteful number, since it uses less digits than its factorization.

13501420140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70136 (or 70121 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 13501420140 its reverse (4102410531), we get a palindrome (17603830671).

The spelling of 13501420140 in words is "thirteen billion, five hundred one million, four hundred twenty thousand, one hundred forty".