2671870444391 has 2 divisors, whose sum is σ = 2671870444392. Its totient is φ = 2671870444390.

The previous prime is 2671870444387. The next prime is 2671870444469. The reversal of 2671870444391 is 1934440781762.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2671870444391 - 2² = 2671870444387 is a prime.

It is a super-2 number, since 2×2671870444391² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2671870444091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335935222195 + 1335935222196.

It is an arithmetic number, because the mean of its divisors is an integer number (1335935222196).

Almost surely, 2^{2671870444391} is an apocalyptic number.

2671870444391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2671870444391 is an equidigital number, since it uses as much as digits as its factorization.

2671870444391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 2671870444391 in words is "two trillion, six hundred seventy-one billion, eight hundred seventy million, four hundred forty-four thousand, three hundred ninety-one".