28502513587 has 2 divisors, whose sum is σ = 28502513588. Its totient is φ = 28502513586.

The previous prime is 28502513521. The next prime is 28502513591. The reversal of 28502513587 is 78531520582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28502513587 is a prime.

It is not a weakly prime, because it can be changed into another prime (28502513287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14251256793 + 14251256794.

It is an arithmetic number, because the mean of its divisors is an integer number (14251256794).

Almost surely, 2^28502513587 is an apocalyptic number.

28502513587 is a deficient number, since it is larger than the sum of its proper divisors (1).

28502513587 is an equidigital number, since it uses as much as digits as its factorization.

28502513587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 28502513587 in words is "twenty-eight billion, five hundred two million, five hundred thirteen thousand, five hundred eighty-seven".