5561171170978 has 16 divisors (see below), whose sum is σ = 8379121204800. Its totient is φ = 2768132572816.

The previous prime is 5561171170921. The next prime is 5561171170981. The reversal of 5561171170978 is 8790711711655.

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, 5820900 + ... + 6708592.

It is an arithmetic number, because the mean of its divisors is an integer number (523695075300).

Almost surely, 2^{5561171170978} is an apocalyptic number.

5561171170978 is a deficient number, since it is larger than the sum of its proper divisors (2817950033822).

5561171170978 is a wasteful number, since it uses less digits than its factorization.

5561171170978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901721.

The product of its (nonzero) digits is 3704400, while the sum is 58.

The spelling of 5561171170978 in words is "five trillion, five hundred sixty-one billion, one hundred seventy-one million, one hundred seventy thousand, nine hundred seventy-eight".