28758595959 has 6 divisors (see below), whose sum is σ = 41540194176. Its totient is φ = 19172397300.

The previous prime is 28758595897. The next prime is 28758595961. The reversal of 28758595959 is 95959585782.

28758595959 is a `hidden beast` number, since 28 + 7 + 5 + 8 + 5 + 9 + 595 + 9 = 666.

It is not a de Polignac number, because 28758595959 - 2¹¹ = 28758593911 is a prime.

It is a super-2 number, since 2×28758595959² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28758595979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1597699767 + ... + 1597699784.

It is an arithmetic number, because the mean of its divisors is an integer number (6923365696).

Almost surely, 2^28758595959 is an apocalyptic number.

28758595959 is a deficient number, since it is larger than the sum of its proper divisors (12781598217).

28758595959 is a wasteful number, since it uses less digits than its factorization.

28758595959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195399557 (or 3195399554 counting only the distinct ones).

The product of its digits is 408240000, while the sum is 72.

The spelling of 28758595959 in words is "twenty-eight billion, seven hundred fifty-eight million, five hundred ninety-five thousand, nine hundred fifty-nine".