28341648677 has 4 divisors (see below), whose sum is σ = 28341986316. Its totient is φ = 28341311040.

The previous prime is 28341648659. The next prime is 28341648697. The reversal of 28341648677 is 77684614382.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1445976676 + 26895672001 = 38026^2 + 163999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28341648677 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 (28341648697) 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, 65543 + ... + 246939.

It is an arithmetic number, because the mean of its divisors is an integer number (7085496579).

Almost surely, 2^28341648677 is an apocalyptic number.

It is an amenable number.

28341648677 is a deficient number, since it is larger than the sum of its proper divisors (337639).

28341648677 is a wasteful number, since it uses less digits than its factorization.

28341648677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337638.

The product of its digits is 10838016, while the sum is 56.

The spelling of 28341648677 in words is "twenty-eight billion, three hundred forty-one million, six hundred forty-eight thousand, six hundred seventy-seven".