13421316787 has 8 divisors (see below), whose sum is σ = 13634816000. Its totient is φ = 13208205384.

The previous prime is 13421316781. The next prime is 13421316817. The reversal of 13421316787 is 78761312431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13421316787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421316781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26787 + ... + 166012.

It is an arithmetic number, because the mean of its divisors is an integer number (1704352000).

Almost surely, 2^13421316787 is an apocalyptic number.

13421316787 is a deficient number, since it is larger than the sum of its proper divisors (213499213).

13421316787 is a wasteful number, since it uses less digits than its factorization.

13421316787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193905.

The product of its digits is 169344, while the sum is 43.

The spelling of 13421316787 in words is "thirteen billion, four hundred twenty-one million, three hundred sixteen thousand, seven hundred eighty-seven".