13911587071 has 4 divisors (see below), whose sum is σ = 14391297000. Its totient is φ = 13431877144.

The previous prime is 13911586993. The next prime is 13911587077. The reversal of 13911587071 is 17078511931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13911587071 - 2⁷ = 13911586943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13911587077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239854921 + ... + 239854978.

It is an arithmetic number, because the mean of its divisors is an integer number (3597824250).

Almost surely, 2^13911587071 is an apocalyptic number.

13911587071 is a deficient number, since it is larger than the sum of its proper divisors (479709929).

13911587071 is an equidigital number, since it uses as much as digits as its factorization.

13911587071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479709928.

The product of its (nonzero) digits is 52920, while the sum is 43.

The spelling of 13911587071 in words is "thirteen billion, nine hundred eleven million, five hundred eighty-seven thousand, seventy-one".