561385386880178 has 8 divisors (see below), whose sum is σ = 962374948937472. Its totient is φ = 240593737234356.

The previous prime is 561385386880133. The next prime is 561385386880261. The reversal of 561385386880178 is 871088683583165.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 561385386880099 and 561385386880108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20049478102850 + ... + 20049478102877.

It is an arithmetic number, because the mean of its divisors is an integer number (120296868617184).

Almost surely, 2^{561385386880178} is an apocalyptic number.

561385386880178 is a deficient number, since it is larger than the sum of its proper divisors (400989562057294).

561385386880178 is a wasteful number, since it uses less digits than its factorization.

561385386880178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40098956205736.

The product of its (nonzero) digits is 1857945600, while the sum is 77.

The spelling of 561385386880178 in words is "five hundred sixty-one trillion, three hundred eighty-five billion, three hundred eighty-six million, eight hundred eighty thousand, one hundred seventy-eight".