2686471870457 has 4 divisors (see below), whose sum is σ = 2686705711860. Its totient is φ = 2686238029056.

The previous prime is 2686471870451. The next prime is 2686471870463. The reversal of 2686471870457 is 7540781746862.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2686471870451) and next prime (2686471870463).

It can be written as a sum of positive squares in 2 ways, for example, as 521877652921 + 2164594217536 = 722411^2 + 1471256^2 .

It is a cyclic number.

It is not a de Polignac number, because 2686471870457 - 2⁶ = 2686471870393 is a prime.

It is a super-2 number, since 2×2686471870457² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2686471870393 and 2686471870402.

It is not an unprimeable number, because it can be changed into a prime (2686471870451) 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, 116903468 + ... + 116926445.

It is an arithmetic number, because the mean of its divisors is an integer number (671676427965).

Almost surely, 2^{2686471870457} is an apocalyptic number.

It is an amenable number.

2686471870457 is a deficient number, since it is larger than the sum of its proper divisors (233841403).

2686471870457 is a wasteful number, since it uses less digits than its factorization.

2686471870457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233841402.

The product of its (nonzero) digits is 126443520, while the sum is 65.

The spelling of 2686471870457 in words is "two trillion, six hundred eighty-six billion, four hundred seventy-one million, eight hundred seventy thousand, four hundred fifty-seven".