2678436720271 has 4 divisors (see below), whose sum is σ = 2884470314152. Its totient is φ = 2472403126392.

The previous prime is 2678436720269. The next prime is 2678436720283. The reversal of 2678436720271 is 1720276348762.

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 2678436720271 - 2¹ = 2678436720269 is a prime.

It is a super-2 number, since 2×2678436720271² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678436720241) 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, 103016796921 + ... + 103016796946.

It is an arithmetic number, because the mean of its divisors is an integer number (721117578538).

Almost surely, 2^{2678436720271} is an apocalyptic number.

2678436720271 is a deficient number, since it is larger than the sum of its proper divisors (206033593881).

2678436720271 is a wasteful number, since it uses less digits than its factorization.

2678436720271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206033593880.

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 2678436720271 in words is "two trillion, six hundred seventy-eight billion, four hundred thirty-six million, seven hundred twenty thousand, two hundred seventy-one".