27657351321 has 8 divisors (see below), whose sum is σ = 37019957664. Its totient is φ = 18366489600.

The previous prime is 27657351269. The next prime is 27657351329. The reversal of 27657351321 is 12315375672.

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

It is not a de Polignac number, because 27657351321 - 2²² = 27653157017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27657351329) 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, 17935255 + ... + 17936796.

It is an arithmetic number, because the mean of its divisors is an integer number (4627494708).

Almost surely, 2^27657351321 is an apocalyptic number.

It is an amenable number.

27657351321 is a deficient number, since it is larger than the sum of its proper divisors (9362606343).

27657351321 is a wasteful number, since it uses less digits than its factorization.

27657351321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35872311.

The product of its digits is 264600, while the sum is 42.

The spelling of 27657351321 in words is "twenty-seven billion, six hundred fifty-seven million, three hundred fifty-one thousand, three hundred twenty-one".