28087764031009 has 8 divisors (see below), whose sum is σ = 29638285447680. Its totient is φ = 26564685471456.

The previous prime is 28087764030947. The next prime is 28087764031097. The reversal of 28087764031009 is 90013046778082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28087764031009 - 2¹³ = 28087764022817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28087764031709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6860712177 + ... + 6860716270.

It is an arithmetic number, because the mean of its divisors is an integer number (3704785680960).

Almost surely, 2^{28087764031009} is an apocalyptic number.

It is an amenable number.

28087764031009 is a deficient number, since it is larger than the sum of its proper divisors (1550521416671).

28087764031009 is a wasteful number, since it uses less digits than its factorization.

28087764031009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13721428559.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 28087764031009 in words is "twenty-eight trillion, eighty-seven billion, seven hundred sixty-four million, thirty-one thousand, nine".