28081464597 has 12 divisors (see below), whose sum is σ = 40612141024. Its totient is φ = 18697887720.

The previous prime is 28081464577. The next prime is 28081464629. The reversal of 28081464597 is 79546418082.

It is a happy number.

28081464597 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 1 + 46 + 4 + 597 = 666.

It is not a de Polignac number, because 28081464597 - 2¹⁸ = 28081202453 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 (28081464557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1916353 + ... + 1930950.

Almost surely, 2^28081464597 is an apocalyptic number.

It is an amenable number.

28081464597 is a deficient number, since it is larger than the sum of its proper divisors (12530676427).

28081464597 is a wasteful number, since it uses less digits than its factorization.

28081464597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848120 (or 3848117 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 28081464597 in words is "twenty-eight billion, eighty-one million, four hundred sixty-four thousand, five hundred ninety-seven".