172849583378 has 16 divisors (see below), whose sum is σ = 259976223000. Its totient is φ = 86190903552.

The previous prime is 172849583363. The next prime is 172849583381. The reversal of 172849583378 is 873385948271.

It can be written as a sum of positive squares in 4 ways, for example, as 34259418649 + 138590164729 = 185093^2 + 372277^2 .

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 7 ways as a sum of consecutive naturals, for example, 9863288 + ... + 9880796.

Almost surely, 2^172849583378 is an apocalyptic number.

172849583378 is a deficient number, since it is larger than the sum of its proper divisors (87126639622).

172849583378 is a wasteful number, since it uses less digits than its factorization.

172849583378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30589.

The product of its digits is 81285120, while the sum is 65.

The spelling of 172849583378 in words is "one hundred seventy-two billion, eight hundred forty-nine million, five hundred eighty-three thousand, three hundred seventy-eight".