28787800130879 has 2 divisors, whose sum is σ = 28787800130880. Its totient is φ = 28787800130878.

The previous prime is 28787800130867. The next prime is 28787800130911. The reversal of 28787800130879 is 97803100878782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28787800130879 - 2⁴ = 28787800130863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28787800130819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14393900065439 + 14393900065440.

It is an arithmetic number, because the mean of its divisors is an integer number (14393900065440).

Almost surely, 2^{28787800130879} is an apocalyptic number.

28787800130879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28787800130879 is an equidigital number, since it uses as much as digits as its factorization.

28787800130879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75866112, while the sum is 68.

The spelling of 28787800130879 in words is "twenty-eight trillion, seven hundred eighty-seven billion, eight hundred million, one hundred thirty thousand, eight hundred seventy-nine".