27949868366 has 32 divisors (see below), whose sum is σ = 48812779008. Its totient is φ = 11755749600.

The previous prime is 27949868363. The next prime is 27949868369. The reversal of 27949868366 is 66386894972.

It is an interprime number because it is at equal distance from previous prime (27949868363) and next prime (27949868369).

It is a junction number, because it is equal to n+sod(n) for n = 27949868296 and 27949868305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27949868363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95816 + ... + 255108.

It is an arithmetic number, because the mean of its divisors is an integer number (1525399344).

Almost surely, 2^27949868366 is an apocalyptic number.

27949868366 is a deficient number, since it is larger than the sum of its proper divisors (20862910642).

27949868366 is a wasteful number, since it uses less digits than its factorization.

27949868366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159536.

The product of its digits is 188116992, while the sum is 68.

The spelling of 27949868366 in words is "twenty-seven billion, nine hundred forty-nine million, eight hundred sixty-eight thousand, three hundred sixty-six".