13161423275640 has 128 divisors (see below), whose sum is σ = 43886409984000. Its totient is φ = 3508512948864.

The previous prime is 13161423275587. The next prime is 13161423275701. The reversal of 13161423275640 is 4657232416131.

13161423275640 is a `hidden beast` number, since 1 + 3 + 1 + 61 + 4 + 2 + 3 + 27 + 564 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079421 + ... + 5242899.

It is an arithmetic number, because the mean of its divisors is an integer number (342862578000).

Almost surely, 2^{13161423275640} is an apocalyptic number.

13161423275640 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 13161423275640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21943204992000).

13161423275640 is an abundant number, since it is smaller than the sum of its proper divisors (30724986708360).

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

13161423275640 is a wasteful number, since it uses less digits than its factorization.

13161423275640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166426 (or 4166416 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 13161423275640 in words is "thirteen trillion, one hundred sixty-one billion, four hundred twenty-three million, two hundred seventy-five thousand, six hundred forty".