28317646155 has 8 divisors (see below), whose sum is σ = 45308233872. Its totient is φ = 15102744608.

The previous prime is 28317646121. The next prime is 28317646157. The reversal of 28317646155 is 55164671382.

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

It is a cyclic number.

It is not a de Polignac number, because 28317646155 - 2²⁵ = 28284091723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28317646157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943921524 + ... + 943921553.

It is an arithmetic number, because the mean of its divisors is an integer number (5663529234).

Almost surely, 2^28317646155 is an apocalyptic number.

28317646155 is a deficient number, since it is larger than the sum of its proper divisors (16990587717).

28317646155 is a wasteful number, since it uses less digits than its factorization.

28317646155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887843085.

The product of its digits is 1209600, while the sum is 48.

The spelling of 28317646155 in words is "twenty-eight billion, three hundred seventeen million, six hundred forty-six thousand, one hundred fifty-five".