1187129668173 has 8 divisors (see below), whose sum is σ = 1584328592448. Its totient is φ = 790675261344.

The previous prime is 1187129668163. The next prime is 1187129668181. The reversal of 1187129668173 is 3718669217811.

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

It is not a de Polignac number, because 1187129668173 - 2¹³ = 1187129659981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187129668163) 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, 186125640 + ... + 186132017.

It is an arithmetic number, because the mean of its divisors is an integer number (198041074056).

Almost surely, 2^{1187129668173} is an apocalyptic number.

It is an amenable number.

1187129668173 is a deficient number, since it is larger than the sum of its proper divisors (397198924275).

1187129668173 is a wasteful number, since it uses less digits than its factorization.

1187129668173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372258723.

The product of its digits is 6096384, while the sum is 60.

The spelling of 1187129668173 in words is "one trillion, one hundred eighty-seven billion, one hundred twenty-nine million, six hundred sixty-eight thousand, one hundred seventy-three".