2647644871187 has 8 divisors (see below), whose sum is σ = 2650998946752. Its totient is φ = 2644292385000.

The previous prime is 2647644871103. The next prime is 2647644871211. The reversal of 2647644871187 is 7811784467462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2647644871187 - 2¹⁰ = 2647644870163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2647644171187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954312 + ... + 3744762.

It is an arithmetic number, because the mean of its divisors is an integer number (331374868344).

Almost surely, 2^{2647644871187} is an apocalyptic number.

2647644871187 is a deficient number, since it is larger than the sum of its proper divisors (3354075565).

2647644871187 is a wasteful number, since it uses less digits than its factorization.

2647644871187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794689.

The product of its digits is 101154816, while the sum is 65.

The spelling of 2647644871187 in words is "two trillion, six hundred forty-seven billion, six hundred forty-four million, eight hundred seventy-one thousand, one hundred eighty-seven".