27494866369 has 4 divisors (see below), whose sum is σ = 27882118080. Its totient is φ = 27107614660.

The previous prime is 27494866367. The next prime is 27494866381. The reversal of 27494866369 is 96366849472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27494866369 - 2¹ = 27494866367 is a prime.

It is a super-2 number, since 2×27494866369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27494866369.

It is not an unprimeable number, because it can be changed into a prime (27494866367) 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, 193625749 + ... + 193625890.

It is an arithmetic number, because the mean of its divisors is an integer number (6970529520).

Almost surely, 2^27494866369 is an apocalyptic number.

It is an amenable number.

27494866369 is a deficient number, since it is larger than the sum of its proper divisors (387251711).

27494866369 is an equidigital number, since it uses as much as digits as its factorization.

27494866369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387251710.

The product of its digits is 94058496, while the sum is 64.

The spelling of 27494866369 in words is "twenty-seven billion, four hundred ninety-four million, eight hundred sixty-six thousand, three hundred sixty-nine".