27722678201 has 4 divisors (see below), whose sum is σ = 28471939812. Its totient is φ = 26973416592.

The previous prime is 27722678177. The next prime is 27722678273. The reversal of 27722678201 is 10287622772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17486095225 + 10236582976 = 132235^2 + 101176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27722678201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27722678701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374630750 + ... + 374630823.

It is an arithmetic number, because the mean of its divisors is an integer number (7117984953).

Almost surely, 2^27722678201 is an apocalyptic number.

It is an amenable number.

27722678201 is a deficient number, since it is larger than the sum of its proper divisors (749261611).

27722678201 is an equidigital number, since it uses as much as digits as its factorization.

27722678201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749261610.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 27722678201 in words is "twenty-seven billion, seven hundred twenty-two million, six hundred seventy-eight thousand, two hundred one".