28777819546 has 8 divisors (see below), whose sum is σ = 49333404960. Its totient is φ = 12333351228.

The previous prime is 28777819523. The next prime is 28777819571. The reversal of 28777819546 is 64591877782.

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

It is a super-2 number, since 2×28777819546² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1027779256 + ... + 1027779283.

It is an arithmetic number, because the mean of its divisors is an integer number (6166675620).

Almost surely, 2^28777819546 is an apocalyptic number.

28777819546 is a deficient number, since it is larger than the sum of its proper divisors (20555585414).

28777819546 is a wasteful number, since it uses less digits than its factorization.

28777819546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055558548.

The product of its digits is 47416320, while the sum is 64.

The spelling of 28777819546 in words is "twenty-eight billion, seven hundred seventy-seven million, eight hundred nineteen thousand, five hundred forty-six".