27181220057 has 8 divisors (see below), whose sum is σ = 28094000256. Its totient is φ = 26282375632.

The previous prime is 27181220047. The next prime is 27181220107. The reversal of 27181220057 is 75002218172.

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 27181220057 - 2⁶ = 27181219993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27181219999 and 27181220026.

It is not an unprimeable number, because it can be changed into a prime (27181220047) 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, 3479978 + ... + 3487779.

It is an arithmetic number, because the mean of its divisors is an integer number (3511750032).

Almost surely, 2^27181220057 is an apocalyptic number.

It is an amenable number.

27181220057 is a deficient number, since it is larger than the sum of its proper divisors (912780199).

27181220057 is an equidigital number, since it uses as much as digits as its factorization.

27181220057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967887.

The product of its (nonzero) digits is 15680, while the sum is 35.

The spelling of 27181220057 in words is "twenty-seven billion, one hundred eighty-one million, two hundred twenty thousand, fifty-seven".