27312781601 has 8 divisors (see below), whose sum is σ = 32221530624. Its totient is φ = 22655763360.

The previous prime is 27312781567. The next prime is 27312781609. The reversal of 27312781601 is 10618721372.

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 27312781601 - 2²⁶ = 27245672737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27312781609) 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, 62932460 + ... + 62932893.

It is an arithmetic number, because the mean of its divisors is an integer number (4027691328).

Almost surely, 2^27312781601 is an apocalyptic number.

It is an amenable number.

27312781601 is a deficient number, since it is larger than the sum of its proper divisors (4908749023).

27312781601 is a wasteful number, since it uses less digits than its factorization.

27312781601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125865391.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 27312781601 in words is "twenty-seven billion, three hundred twelve million, seven hundred eighty-one thousand, six hundred one".