28317750155 has 8 divisors (see below), whose sum is σ = 34014654000. Its totient is φ = 22631964256.

The previous prime is 28317750151. The next prime is 28317750247. The reversal of 28317750155 is 55105771382.

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 28317750155 - 2² = 28317750151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28317750151) 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, 2773880 + ... + 2784069.

It is an arithmetic number, because the mean of its divisors is an integer number (4251831750).

Almost surely, 2^28317750155 is an apocalyptic number.

28317750155 is a deficient number, since it is larger than the sum of its proper divisors (5696903845).

28317750155 is a wasteful number, since it uses less digits than its factorization.

28317750155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558973.

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 28317750155 in words is "twenty-eight billion, three hundred seventeen million, seven hundred fifty thousand, one hundred fifty-five".