13261370140 has 12 divisors (see below), whose sum is σ = 27848877336. Its totient is φ = 5304548048.

The previous prime is 13261370119. The next prime is 13261370141. The reversal of 13261370140 is 4107316231.

It is a junction number, because it is equal to n+sod(n) for n = 13261370099 and 13261370108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261370141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331534234 + ... + 331534273.

It is an arithmetic number, because the mean of its divisors is an integer number (2320739778).

Almost surely, 2^13261370140 is an apocalyptic number.

13261370140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13261370140 is an abundant number, since it is smaller than the sum of its proper divisors (14587507196).

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

13261370140 is a wasteful number, since it uses less digits than its factorization.

13261370140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663068516 (or 663068514 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 13261370140 its reverse (4107316231), we get a palindrome (17368686371).

The spelling of 13261370140 in words is "thirteen billion, two hundred sixty-one million, three hundred seventy thousand, one hundred forty".