55500016978 has 8 divisors (see below), whose sum is σ = 95142886272. Its totient is φ = 23785721556.

The previous prime is 55500016951. The next prime is 55500016993. The reversal of 55500016978 is 87961000555.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982143450 + ... + 1982143477.

It is an arithmetic number, because the mean of its divisors is an integer number (11892860784).

Almost surely, 2^55500016978 is an apocalyptic number.

55500016978 is a deficient number, since it is larger than the sum of its proper divisors (39642869294).

55500016978 is a wasteful number, since it uses less digits than its factorization.

55500016978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964286936.

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 55500016978 in words is "fifty-five billion, five hundred million, sixteen thousand, nine hundred seventy-eight".