28115579951 has 2 divisors, whose sum is σ = 28115579952. Its totient is φ = 28115579950.

The previous prime is 28115579887. The next prime is 28115579957. The reversal of 28115579951 is 15997551182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28115579951 - 2⁶ = 28115579887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28115579893 and 28115579902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28115579957) 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 as a sum of consecutive naturals, namely, 14057789975 + 14057789976.

It is an arithmetic number, because the mean of its divisors is an integer number (14057789976).

Almost surely, 2^28115579951 is an apocalyptic number.

28115579951 is a deficient number, since it is larger than the sum of its proper divisors (1).

28115579951 is an equidigital number, since it uses as much as digits as its factorization.

28115579951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 53.

The spelling of 28115579951 in words is "twenty-eight billion, one hundred fifteen million, five hundred seventy-nine thousand, nine hundred fifty-one".