1376318532173 has 8 divisors (see below), whose sum is σ = 1484757982008. Its totient is φ = 1268246052864.

The previous prime is 1376318532143. The next prime is 1376318532181. The reversal of 1376318532173 is 3712358136731.

It can be written as a sum of positive squares in 4 ways, for example, as 872994972964 + 503323559209 = 934342^2 + 709453^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1376318532173 - 2¹² = 1376318528077 is a prime.

It is a super-2 number, since 2×1376318532173² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376318532103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91734836 + ... + 91749837.

It is an arithmetic number, because the mean of its divisors is an integer number (185594747751).

Almost surely, 2^{1376318532173} is an apocalyptic number.

1376318532173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1376318532173 is a deficient number, since it is larger than the sum of its proper divisors (108439449835).

1376318532173 is a wasteful number, since it uses less digits than its factorization.

1376318532173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183485263.

The product of its digits is 1905120, while the sum is 50.

The spelling of 1376318532173 in words is "one trillion, three hundred seventy-six billion, three hundred eighteen million, five hundred thirty-two thousand, one hundred seventy-three".