13135725870 has 32 divisors (see below), whose sum is σ = 31996280448. Its totient is φ = 3450578208.

The previous prime is 13135725853. The next prime is 13135725881. The reversal of 13135725870 is 7852753131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3265584 + ... + 3269603.

It is an arithmetic number, because the mean of its divisors is an integer number (999883764).

Almost surely, 2^13135725870 is an apocalyptic number.

13135725870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13135725870 is an abundant number, since it is smaller than the sum of its proper divisors (18860554578).

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

13135725870 is a wasteful number, since it uses less digits than its factorization.

13135725870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6535264.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 13135725870 in words is "thirteen billion, one hundred thirty-five million, seven hundred twenty-five thousand, eight hundred seventy".