28087206957879 has 16 divisors (see below), whose sum is σ = 37481960914944. Its totient is φ = 18708634735200.

The previous prime is 28087206957871. The next prime is 28087206957889. The reversal of 28087206957879 is 97875960278082.

It is not a de Polignac number, because 28087206957879 - 2³ = 28087206957871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28087206957871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18326274 + ... + 19799664.

It is an arithmetic number, because the mean of its divisors is an integer number (2342622557184).

Almost surely, 2^{28087206957879} is an apocalyptic number.

28087206957879 is a deficient number, since it is larger than the sum of its proper divisors (9394753957065).

28087206957879 is a wasteful number, since it uses less digits than its factorization.

28087206957879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478878.

The product of its (nonzero) digits is 1706987520, while the sum is 78.

The spelling of 28087206957879 in words is "twenty-eight trillion, eighty-seven billion, two hundred six million, nine hundred fifty-seven thousand, eight hundred seventy-nine".