28181305651241 has 8 divisors (see below), whose sum is σ = 29291672956224. Its totient is φ = 27089291525040.

The previous prime is 28181305651211. The next prime is 28181305651357. The reversal of 28181305651241 is 14215650318182.

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 28181305651241 - 2¹⁰ = 28181305650217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28181305651201) 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, 4588291565 + ... + 4588297706.

It is an arithmetic number, because the mean of its divisors is an integer number (3661459119528).

Almost surely, 2^{28181305651241} is an apocalyptic number.

It is an amenable number.

28181305651241 is a deficient number, since it is larger than the sum of its proper divisors (1110367304983).

28181305651241 is an equidigital number, since it uses as much as digits as its factorization.

28181305651241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176589391.

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 28181305651241 in words is "twenty-eight trillion, one hundred eighty-one billion, three hundred five million, six hundred fifty-one thousand, two hundred forty-one".