28057730517 has 24 divisors (see below), whose sum is σ = 41649566816. Its totient is φ = 18188071776.

The previous prime is 28057730507. The next prime is 28057730527. The reversal of 28057730517 is 71503775082.

28057730517 is a `hidden beast` number, since 2 + 80 + 57 + 7 + 3 + 0 + 517 = 666.

It is an interprime number because it is at equal distance from previous prime (28057730507) and next prime (28057730527).

It is not a de Polignac number, because 28057730517 - 2⁶ = 28057730453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057730507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515898 + ... + 567684.

Almost surely, 2^28057730517 is an apocalyptic number.

It is an amenable number.

28057730517 is a deficient number, since it is larger than the sum of its proper divisors (13591836299).

28057730517 is a wasteful number, since it uses less digits than its factorization.

28057730517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53457 (or 53454 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The spelling of 28057730517 in words is "twenty-eight billion, fifty-seven million, seven hundred thirty thousand, five hundred seventeen".