28979854455 has 8 divisors (see below), whose sum is σ = 46367767152. Its totient is φ = 15455922368.

The previous prime is 28979854451. The next prime is 28979854583. The reversal of 28979854455 is 55445897982.

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 28979854455 - 2² = 28979854451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28979854451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965995134 + ... + 965995163.

It is an arithmetic number, because the mean of its divisors is an integer number (5795970894).

Almost surely, 2^28979854455 is an apocalyptic number.

28979854455 is a deficient number, since it is larger than the sum of its proper divisors (17387912697).

28979854455 is a wasteful number, since it uses less digits than its factorization.

28979854455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931990305.

The product of its digits is 145152000, while the sum is 66.

The spelling of 28979854455 in words is "twenty-eight billion, nine hundred seventy-nine million, eight hundred fifty-four thousand, four hundred fifty-five".