28171066371 has 8 divisors (see below), whose sum is σ = 42927339264. Its totient is φ = 16097752200.

The previous prime is 28171066369. The next prime is 28171066447. The reversal of 28171066371 is 17366017182.

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

It is not a de Polignac number, because 28171066371 - 2¹ = 28171066369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28171066171) 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, 670739655 + ... + 670739696.

It is an arithmetic number, because the mean of its divisors is an integer number (5365917408).

Almost surely, 2^28171066371 is an apocalyptic number.

28171066371 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28171066371 is a deficient number, since it is larger than the sum of its proper divisors (14756272893).

28171066371 is a wasteful number, since it uses less digits than its factorization.

28171066371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341479361.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 28171066371 in words is "twenty-eight billion, one hundred seventy-one million, sixty-six thousand, three hundred seventy-one".