28470551791 has 16 divisors (see below), whose sum is σ = 31214367360. Its totient is φ = 25752808480.

The previous prime is 28470551789. The next prime is 28470551873. The reversal of 28470551791 is 19715507482.

It is a cyclic number.

It is not a de Polignac number, because 28470551791 - 2¹ = 28470551789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470552791) 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 in 15 ways as a sum of consecutive naturals, for example, 7081980 + ... + 7085998.

It is an arithmetic number, because the mean of its divisors is an integer number (1950897960).

Almost surely, 2^28470551791 is an apocalyptic number.

28470551791 is a deficient number, since it is larger than the sum of its proper divisors (2743815569).

28470551791 is a wasteful number, since it uses less digits than its factorization.

28470551791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 28470551791 in words is "twenty-eight billion, four hundred seventy million, five hundred fifty-one thousand, seven hundred ninety-one".