28373502017 has 4 divisors (see below), whose sum is σ = 32426859456. Its totient is φ = 24320144580.

The previous prime is 28373501939. The next prime is 28373502049. The reversal of 28373502017 is 71020537382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28373502017 - 2¹² = 28373497921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28373502517) 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, 2026678709 + ... + 2026678722.

It is an arithmetic number, because the mean of its divisors is an integer number (8106714864).

Almost surely, 2^28373502017 is an apocalyptic number.

It is an amenable number.

28373502017 is a deficient number, since it is larger than the sum of its proper divisors (4053357439).

28373502017 is an equidigital number, since it uses as much as digits as its factorization.

28373502017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053357438.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 28373502017 in words is "twenty-eight billion, three hundred seventy-three million, five hundred two thousand, seventeen".