14642687881 has 4 divisors (see below), whose sum is σ = 14703446164. Its totient is φ = 14581929600.

The previous prime is 14642687879. The next prime is 14642687921. The reversal of 14642687881 is 18878624641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8332768656 + 6309919225 = 91284^2 + 79435^2 .

It is a cyclic number.

It is not a de Polignac number, because 14642687881 - 2¹ = 14642687879 is a prime.

It is a super-2 number, since 2×14642687881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14642087881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30378780 + ... + 30379261.

It is an arithmetic number, because the mean of its divisors is an integer number (3675861541).

Almost surely, 2^14642687881 is an apocalyptic number.

It is an amenable number.

14642687881 is a deficient number, since it is larger than the sum of its proper divisors (60758283).

14642687881 is an equidigital number, since it uses as much as digits as its factorization.

14642687881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60758282.

The product of its digits is 4128768, while the sum is 55.

The spelling of 14642687881 in words is "fourteen billion, six hundred forty-two million, six hundred eighty-seven thousand, eight hundred eighty-one".