27791713778 has 8 divisors (see below), whose sum is σ = 41703256560. Its totient is φ = 13890628260.

The previous prime is 27791713777. The next prime is 27791713787. The reversal of 27791713778 is 87731719772.

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

It is not an unprimeable number, because it can be changed into a prime (27791713771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2607668 + ... + 2618303.

It is an arithmetic number, because the mean of its divisors is an integer number (5212907070).

Almost surely, 2^27791713778 is an apocalyptic number.

27791713778 is a deficient number, since it is larger than the sum of its proper divisors (13911542782).

27791713778 is a wasteful number, since it uses less digits than its factorization.

27791713778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228632.

The product of its digits is 7260624, while the sum is 59.

The spelling of 27791713778 in words is "twenty-seven billion, seven hundred ninety-one million, seven hundred thirteen thousand, seven hundred seventy-eight".