5617890066779 has 4 divisors (see below), whose sum is σ = 5639250865776. Its totient is φ = 5596529267784.

The previous prime is 5617890066739. The next prime is 5617890066797. The reversal of 5617890066779 is 9776600987165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5617890066779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5617890066739) 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, 10680399104 + ... + 10680399629.

It is an arithmetic number, because the mean of its divisors is an integer number (1409812716444).

Almost surely, 2^{5617890066779} is an apocalyptic number.

5617890066779 is a deficient number, since it is larger than the sum of its proper divisors (21360798997).

5617890066779 is a wasteful number, since it uses less digits than its factorization.

5617890066779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21360798996.

The product of its (nonzero) digits is 240045120, while the sum is 71.

The spelling of 5617890066779 in words is "five trillion, six hundred seventeen billion, eight hundred ninety million, sixty-six thousand, seven hundred seventy-nine".