13601361240 has 224 divisors, whose sum is σ = 46202421600. Its totient is φ = 3601843200.

The previous prime is 13601361239. The next prime is 13601361247. The reversal of 13601361240 is 4216310631.

13601361240 is a `hidden beast` number, since 1 + 3 + 6 + 0 + 1 + 3 + 612 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601361247) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4401616 + ... + 4404704.

Almost surely, 2^13601361240 is an apocalyptic number.

13601361240 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 13601361240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23101210800).

13601361240 is an abundant number, since it is smaller than the sum of its proper divisors (32601060360).

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

13601361240 is a wasteful number, since it uses less digits than its factorization.

13601361240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 13601361240 its reverse (4216310631), we get a palindrome (17817671871).

The spelling of 13601361240 in words is "thirteen billion, six hundred one million, three hundred sixty-one thousand, two hundred forty".