2687421345319 has 4 divisors (see below), whose sum is σ = 2828864574040. Its totient is φ = 2545978116600.

The previous prime is 2687421345289. The next prime is 2687421345353. The reversal of 2687421345319 is 9135431247862.

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 2687421345319 - 2⁹ = 2687421344807 is a prime.

It is a super-2 number, since 2×2687421345319² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2687421345319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687421945319) 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, 70721614332 + ... + 70721614369.

It is an arithmetic number, because the mean of its divisors is an integer number (707216143510).

Almost surely, 2^{2687421345319} is an apocalyptic number.

2687421345319 is a deficient number, since it is larger than the sum of its proper divisors (141443228721).

2687421345319 is a wasteful number, since it uses less digits than its factorization.

2687421345319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141443228720.

The product of its digits is 8709120, while the sum is 55.

The spelling of 2687421345319 in words is "two trillion, six hundred eighty-seven billion, four hundred twenty-one million, three hundred forty-five thousand, three hundred nineteen".