6617663278277 has 4 divisors (see below), whose sum is σ = 6618085258080. Its totient is φ = 6617241298476.

The previous prime is 6617663278229. The next prime is 6617663278307. The reversal of 6617663278277 is 7728723667166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6617663278277 - 2²⁶ = 6617596169413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6617663278477) 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, 210966377 + ... + 210997742.

It is an arithmetic number, because the mean of its divisors is an integer number (1654521314520).

Almost surely, 2^{6617663278277} is an apocalyptic number.

It is an amenable number.

6617663278277 is a deficient number, since it is larger than the sum of its proper divisors (421979803).

6617663278277 is a wasteful number, since it uses less digits than its factorization.

6617663278277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421979802.

The product of its digits is 298722816, while the sum is 68.

The spelling of 6617663278277 in words is "six trillion, six hundred seventeen billion, six hundred sixty-three million, two hundred seventy-eight thousand, two hundred seventy-seven".