30766216978 has 8 divisors (see below), whose sum is σ = 52742086272. Its totient is φ = 13185521556.

The previous prime is 30766216883. The next prime is 30766217021. The reversal of 30766216978 is 87961266703.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 1098793450 + ... + 1098793477.

It is an arithmetic number, because the mean of its divisors is an integer number (6592760784).

Almost surely, 2^30766216978 is an apocalyptic number.

30766216978 is a deficient number, since it is larger than the sum of its proper divisors (21975869294).

30766216978 is a wasteful number, since it uses less digits than its factorization.

30766216978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197586936.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 30766216978 in words is "thirty billion, seven hundred sixty-six million, two hundred sixteen thousand, nine hundred seventy-eight".