28111216147 has 8 divisors (see below), whose sum is σ = 33523934976. Its totient is φ = 23047705032.

The previous prime is 28111216139. The next prime is 28111216151. The reversal of 28111216147 is 74161211182.

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 28111216147 - 2³ = 28111216139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28111216117) 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, 87301753 + ... + 87302074.

It is an arithmetic number, because the mean of its divisors is an integer number (4190491872).

Almost surely, 2^28111216147 is an apocalyptic number.

28111216147 is a deficient number, since it is larger than the sum of its proper divisors (5412718829).

28111216147 is a wasteful number, since it uses less digits than its factorization.

28111216147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174603857.

The product of its digits is 5376, while the sum is 34.

The spelling of 28111216147 in words is "twenty-eight billion, one hundred eleven million, two hundred sixteen thousand, one hundred forty-seven".