28291061167 has 4 divisors (see below), whose sum is σ = 28298196736. Its totient is φ = 28283925600.

The previous prime is 28291061129. The next prime is 28291061189. The reversal of 28291061167 is 76116019282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28291061167 - 2¹¹ = 28291059119 is a prime.

It is a super-3 number, since 3×28291061167³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28291061867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3561834 + ... + 3569767.

It is an arithmetic number, because the mean of its divisors is an integer number (7074549184).

Almost surely, 2^28291061167 is an apocalyptic number.

28291061167 is a deficient number, since it is larger than the sum of its proper divisors (7135569).

28291061167 is an equidigital number, since it uses as much as digits as its factorization.

28291061167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135568.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 28291061167 in words is "twenty-eight billion, two hundred ninety-one million, sixty-one thousand, one hundred sixty-seven".