1670545627901 has 2 divisors, whose sum is σ = 1670545627902. Its totient is φ = 1670545627900.

The previous prime is 1670545627819. The next prime is 1670545627903. The reversal of 1670545627901 is 1097265450761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104664060900 + 565881567001 = 1051030^2 + 752251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670545627901 - 2¹⁴ = 1670545611517 is a prime.

Together with 1670545627903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1670545627903) 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, 835272813950 + 835272813951.

It is an arithmetic number, because the mean of its divisors is an integer number (835272813951).

Almost surely, 2^{1670545627901} is an apocalyptic number.

It is an amenable number.

1670545627901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670545627901 is an equidigital number, since it uses as much as digits as its factorization.

1670545627901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 1670545627901 in words is "one trillion, six hundred seventy billion, five hundred forty-five million, six hundred twenty-seven thousand, nine hundred one".