28618456783 has 16 divisors (see below), whose sum is σ = 32987520000. Its totient is φ = 24320473632.

The previous prime is 28618456777. The next prime is 28618456807. The reversal of 28618456783 is 38765481682.

It is a happy number.

It is not a de Polignac number, because 28618456783 - 2⁹ = 28618456271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28618456723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345768 + ... + 420466.

It is an arithmetic number, because the mean of its divisors is an integer number (2061720000).

Almost surely, 2^28618456783 is an apocalyptic number.

28618456783 is a deficient number, since it is larger than the sum of its proper divisors (4369063217).

28618456783 is a wasteful number, since it uses less digits than its factorization.

28618456783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75174.

The product of its digits is 15482880, while the sum is 58.

The spelling of 28618456783 in words is "twenty-eight billion, six hundred eighteen million, four hundred fifty-six thousand, seven hundred eighty-three".