28907516471 has 2 divisors, whose sum is σ = 28907516472. Its totient is φ = 28907516470.

The previous prime is 28907516447. The next prime is 28907516497. The reversal of 28907516471 is 17461570982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28907516471 - 2¹⁰ = 28907515447 is a prime.

It is a super-3 number, since 3×28907516471³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28907516171) 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 as a sum of consecutive naturals, namely, 14453758235 + 14453758236.

It is an arithmetic number, because the mean of its divisors is an integer number (14453758236).

Almost surely, 2^28907516471 is an apocalyptic number.

28907516471 is a deficient number, since it is larger than the sum of its proper divisors (1).

28907516471 is an equidigital number, since it uses as much as digits as its factorization.

28907516471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 28907516471 in words is "twenty-eight billion, nine hundred seven million, five hundred sixteen thousand, four hundred seventy-one".