28465481949473 has 4 divisors (see below), whose sum is σ = 28573715721408. Its totient is φ = 28357248177540.

The previous prime is 28465481949449. The next prime is 28465481949497. The reversal of 28465481949473 is 37494918456482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (28465481949449) and next prime (28465481949497).

It is a cyclic number.

It is not a de Polignac number, because 28465481949473 - 2¹⁸ = 28465481687329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28465481949473.

It is not an unprimeable number, because it can be changed into a prime (28465481949403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54116885573 + ... + 54116886098.

It is an arithmetic number, because the mean of its divisors is an integer number (7143428930352).

Almost surely, 2^{28465481949473} is an apocalyptic number.

It is an amenable number.

28465481949473 is a deficient number, since it is larger than the sum of its proper divisors (108233771935).

28465481949473 is a wasteful number, since it uses less digits than its factorization.

28465481949473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108233771934.

The product of its digits is 1672151040, while the sum is 74.

The spelling of 28465481949473 in words is "twenty-eight trillion, four hundred sixty-five billion, four hundred eighty-one million, nine hundred forty-nine thousand, four hundred seventy-three".