173549872242 has 16 divisors (see below), whose sum is σ = 385666382880. Its totient is φ = 57849957396.

The previous prime is 173549872217. The next prime is 173549872247. The reversal of 173549872242 is 242278945371.

173549872242 is a `hidden beast` number, since 1 + 7 + 3 + 549 + 8 + 72 + 24 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 3213886523 = 173549872242 / (1 + 7 + 3 + 5 + 4 + 9 + 8 + 7 + 2 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (173549872247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606943208 + ... + 1606943315.

It is an arithmetic number, because the mean of its divisors is an integer number (24104148930).

Almost surely, 2^173549872242 is an apocalyptic number.

173549872242 is an abundant number, since it is smaller than the sum of its proper divisors (212116510638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173549872242 is a wasteful number, since it uses less digits than its factorization.

173549872242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213886534 (or 3213886528 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 173549872242 in words is "one hundred seventy-three billion, five hundred forty-nine million, eight hundred seventy-two thousand, two hundred forty-two".