27223746691 has 8 divisors (see below), whose sum is σ = 27805307904. Its totient is φ = 26642282760.

The previous prime is 27223746679. The next prime is 27223746721. The reversal of 27223746691 is 19664732272.

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

It is not a de Polignac number, because 27223746691 - 2¹¹ = 27223744643 is a prime.

It is a super-2 number, since 2×27223746691² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27223746631) 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, 971446 + ... + 999076.

It is an arithmetic number, because the mean of its divisors is an integer number (3475663488).

Almost surely, 2^27223746691 is an apocalyptic number.

27223746691 is a deficient number, since it is larger than the sum of its proper divisors (581561213).

27223746691 is a wasteful number, since it uses less digits than its factorization.

27223746691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48641.

The product of its digits is 1524096, while the sum is 49.

The spelling of 27223746691 in words is "twenty-seven billion, two hundred twenty-three million, seven hundred forty-six thousand, six hundred ninety-one".