1667804454139 has 2 divisors, whose sum is σ = 1667804454140. Its totient is φ = 1667804454138.

The previous prime is 1667804454119. The next prime is 1667804454149. The reversal of 1667804454139 is 9314544087661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1667804454139 - 2¹³ = 1667804445947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1667804454119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833902227069 + 833902227070.

It is an arithmetic number, because the mean of its divisors is an integer number (833902227070).

Almost surely, 2^{1667804454139} is an apocalyptic number.

1667804454139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1667804454139 is an equidigital number, since it uses as much as digits as its factorization.

1667804454139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 1667804454139 in words is "one trillion, six hundred sixty-seven billion, eight hundred four million, four hundred fifty-four thousand, one hundred thirty-nine".