1671048537391 has 2 divisors, whose sum is σ = 1671048537392. Its totient is φ = 1671048537390.

The previous prime is 1671048537329. The next prime is 1671048537419. The reversal of 1671048537391 is 1937358401761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1671048537391 - 2⁹ = 1671048536879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1671048537491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835524268695 + 835524268696.

It is an arithmetic number, because the mean of its divisors is an integer number (835524268696).

Almost surely, 2^{1671048537391} is an apocalyptic number.

1671048537391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671048537391 is an equidigital number, since it uses as much as digits as its factorization.

1671048537391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 1671048537391 in words is "one trillion, six hundred seventy-one billion, forty-eight million, five hundred thirty-seven thousand, three hundred ninety-one".