1663077919859 has 4 divisors (see below), whose sum is σ = 1663149754320. Its totient is φ = 1663006085400.

The previous prime is 1663077919817. The next prime is 1663077919879. The reversal of 1663077919859 is 9589197703661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1663077919859 - 2²⁰ = 1663076871283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1663077919792 and 1663077919801.

It is not an unprimeable number, because it can be changed into a prime (1663077919879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35882492 + ... + 35928809.

It is an arithmetic number, because the mean of its divisors is an integer number (415787438580).

Almost surely, 2^{1663077919859} is an apocalyptic number.

1663077919859 is a deficient number, since it is larger than the sum of its proper divisors (71834461).

1663077919859 is an equidigital number, since it uses as much as digits as its factorization.

1663077919859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71834460.

The product of its (nonzero) digits is 154314720, while the sum is 71.

The spelling of 1663077919859 in words is "one trillion, six hundred sixty-three billion, seventy-seven million, nine hundred nineteen thousand, eight hundred fifty-nine".