12177327578 has 16 divisors (see below), whose sum is σ = 19705541856. Its totient is φ = 5610455280.

The previous prime is 12177327551. The next prime is 12177327607. The reversal of 12177327578 is 87572377121.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 395276 + ... + 424967.

It is an arithmetic number, because the mean of its divisors is an integer number (1231596366).

Almost surely, 2^12177327578 is an apocalyptic number.

12177327578 is a deficient number, since it is larger than the sum of its proper divisors (7528214278).

12177327578 is a wasteful number, since it uses less digits than its factorization.

12177327578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820829.

The product of its digits is 1152480, while the sum is 50.

The spelling of 12177327578 in words is "twelve billion, one hundred seventy-seven million, three hundred twenty-seven thousand, five hundred seventy-eight".