28133930071 has 18 divisors (see below), whose sum is σ = 32362053792. Its totient is φ = 24442104960.

The previous prime is 28133930053. The next prime is 28133930081. The reversal of 28133930071 is 17003933182.

It is not a de Polignac number, because 28133930071 - 2²¹ = 28131832919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28133930071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28133930081) 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 17 ways as a sum of consecutive naturals, for example, 239175 + ... + 336856.

Almost surely, 2^28133930071 is an apocalyptic number.

28133930071 is a deficient number, since it is larger than the sum of its proper divisors (4228123721).

28133930071 is a wasteful number, since it uses less digits than its factorization.

28133930071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576091 (or 576061 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 28133930071 in words is "twenty-eight billion, one hundred thirty-three million, nine hundred thirty thousand, seventy-one".