28131743677 has 8 divisors (see below), whose sum is σ = 28275713280. Its totient is φ = 27988139280.

The previous prime is 28131743621. The next prime is 28131743719. The reversal of 28131743677 is 77634713182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28131743677 - 2¹¹ = 28131741629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28131743677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131743177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63823 + ... + 245635.

It is an arithmetic number, because the mean of its divisors is an integer number (3534464160).

Almost surely, 2^28131743677 is an apocalyptic number.

It is an amenable number.

28131743677 is a deficient number, since it is larger than the sum of its proper divisors (143969603).

28131743677 is a wasteful number, since it uses less digits than its factorization.

28131743677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182603.

The product of its digits is 1185408, while the sum is 49.

The spelling of 28131743677 in words is "twenty-eight billion, one hundred thirty-one million, seven hundred forty-three thousand, six hundred seventy-seven".