550008446978 has 16 divisors (see below), whose sum is σ = 831130470240. Its totient is φ = 272965826016.

The previous prime is 550008446959. The next prime is 550008446987. The reversal of 550008446978 is 879644800055.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064726 + ... + 1494542.

It is an arithmetic number, because the mean of its divisors is an integer number (51945654390).

Almost surely, 2^550008446978 is an apocalyptic number.

550008446978 is a deficient number, since it is larger than the sum of its proper divisors (281122023262).

550008446978 is a wasteful number, since it uses less digits than its factorization.

550008446978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434561.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 550008446978 in words is "five hundred fifty billion, eight million, four hundred forty-six thousand, nine hundred seventy-eight".