27791630399 has 8 divisors (see below), whose sum is σ = 29931028512. Its totient is φ = 25652458080.

The previous prime is 27791630389. The next prime is 27791630437. The reversal of 27791630399 is 99303619772.

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 27791630399 - 2¹⁶ = 27791564863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27791630389) 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, 268517 + ... + 357329.

It is an arithmetic number, because the mean of its divisors is an integer number (3741378564).

Almost surely, 2^27791630399 is an apocalyptic number.

27791630399 is a deficient number, since it is larger than the sum of its proper divisors (2139398113).

27791630399 is a wasteful number, since it uses less digits than its factorization.

27791630399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112897.

The product of its (nonzero) digits is 3857868, while the sum is 56.

The spelling of 27791630399 in words is "twenty-seven billion, seven hundred ninety-one million, six hundred thirty thousand, three hundred ninety-nine".