13187743461 has 16 divisors (see below), whose sum is σ = 19638635520. Its totient is φ = 8746272000.

The previous prime is 13187743453. The next prime is 13187743469. The reversal of 13187743461 is 16434778131.

13187743461 is a `hidden beast` number, since 1 + 3 + 187 + 7 + 4 + 3 + 461 = 666.

It is an interprime number because it is at equal distance from previous prime (13187743453) and next prime (13187743469).

It is not a de Polignac number, because 13187743461 - 2³ = 13187743453 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13187743469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1260165 + ... + 1270586.

It is an arithmetic number, because the mean of its divisors is an integer number (1227414720).

Almost surely, 2^13187743461 is an apocalyptic number.

It is an amenable number.

13187743461 is a deficient number, since it is larger than the sum of its proper divisors (6450892059).

13187743461 is a wasteful number, since it uses less digits than its factorization.

13187743461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530953 (or 2530947 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The spelling of 13187743461 in words is "thirteen billion, one hundred eighty-seven million, seven hundred forty-three thousand, four hundred sixty-one".