28554072851 has 4 divisors (see below), whose sum is σ = 28566220704. Its totient is φ = 28541925000.

The previous prime is 28554072847. The next prime is 28554072857. The reversal of 28554072851 is 15827045582.

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 28554072851 - 2² = 28554072847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28554072796 and 28554072805.

It is not an unprimeable number, because it can be changed into a prime (28554072857) 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, 6070400 + ... + 6075101.

It is an arithmetic number, because the mean of its divisors is an integer number (7141555176).

Almost surely, 2^28554072851 is an apocalyptic number.

28554072851 is a deficient number, since it is larger than the sum of its proper divisors (12147853).

28554072851 is a wasteful number, since it uses less digits than its factorization.

28554072851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147852.

The product of its (nonzero) digits is 896000, while the sum is 47.

The spelling of 28554072851 in words is "twenty-eight billion, five hundred fifty-four million, seventy-two thousand, eight hundred fifty-one".