2671615017891 has 12 divisors (see below), whose sum is σ = 3859020096880. Its totient is φ = 1781067158640.

The previous prime is 2671615017857. The next prime is 2671615017913. The reversal of 2671615017891 is 1987105161762.

2671615017891 is a `hidden beast` number, since 2 + 6 + 7 + 1 + 61 + 501 + 78 + 9 + 1 = 666.

It is not a de Polignac number, because 2671615017891 - 2¹⁴ = 2671615001507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2671615010891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1265121 + ... + 2635101.

Almost surely, 2^{2671615017891} is an apocalyptic number.

2671615017891 is a deficient number, since it is larger than the sum of its proper divisors (1187405078989).

2671615017891 is a wasteful number, since it uses less digits than its factorization.

2671615017891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586666 (or 1586663 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 2671615017891 in words is "two trillion, six hundred seventy-one billion, six hundred fifteen million, seventeen thousand, eight hundred ninety-one".