28535780755 has 8 divisors (see below), whose sum is σ = 34725232224. Its totient is φ = 22507094400.

The previous prime is 28535780723. The next prime is 28535780771. The reversal of 28535780755 is 55708753582.

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

It is not a de Polignac number, because 28535780755 - 2⁵ = 28535780723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28535780696 and 28535780705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40190886 + ... + 40191595.

It is an arithmetic number, because the mean of its divisors is an integer number (4340654028).

Almost surely, 2^28535780755 is an apocalyptic number.

28535780755 is a deficient number, since it is larger than the sum of its proper divisors (6189451469).

28535780755 is an equidigital number, since it uses as much as digits as its factorization.

28535780755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80382557.

The product of its (nonzero) digits is 11760000, while the sum is 55.

The spelling of 28535780755 in words is "twenty-eight billion, five hundred thirty-five million, seven hundred eighty thousand, seven hundred fifty-five".