1663077919879 has 2 divisors, whose sum is σ = 1663077919880. Its totient is φ = 1663077919878.

The previous prime is 1663077919817. The next prime is 1663077919889. The reversal of 1663077919879 is 9789197703661.

It is a strong prime.

It is an emirp because it is prime and its reverse (9789197703661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1663077919879 - 2¹³ = 1663077911687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663077919889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831538959939 + 831538959940.

It is an arithmetic number, because the mean of its divisors is an integer number (831538959940).

Almost surely, 2^{1663077919879} is an apocalyptic number.

1663077919879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663077919879 is an equidigital number, since it uses as much as digits as its factorization.

1663077919879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216040608, while the sum is 73.

The spelling of 1663077919879 in words is "one trillion, six hundred sixty-three billion, seventy-seven million, nine hundred nineteen thousand, eight hundred seventy-nine".