28073477663 has 16 divisors (see below), whose sum is σ = 37059565824. Its totient is φ = 20588645760.

The previous prime is 28073477659. The next prime is 28073477671. The reversal of 28073477663 is 36677437082.

It is a cyclic number.

It is not a de Polignac number, because 28073477663 - 2² = 28073477659 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 (28073477623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10721945 + ... + 10724562.

It is an arithmetic number, because the mean of its divisors is an integer number (2316222864).

Almost surely, 2^28073477663 is an apocalyptic number.

28073477663 is a deficient number, since it is larger than the sum of its proper divisors (8986088161).

28073477663 is a wasteful number, since it uses less digits than its factorization.

28073477663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21446542.

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 28073477663 in words is "twenty-eight billion, seventy-three million, four hundred seventy-seven thousand, six hundred sixty-three".