168180315037 has 4 divisors (see below), whose sum is σ = 192206074336. Its totient is φ = 144154555740.

The previous prime is 168180314983. The next prime is 168180315059. The reversal of 168180315037 is 730513081861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 730513081861 = 1109 ⋅658713329.

It is a cyclic number.

It is not a de Polignac number, because 168180315037 - 2³¹ = 166032831389 is a prime.

It is a super-2 number, since 2×168180315037² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168180314984 and 168180315002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168180315137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12012879639 + ... + 12012879652.

It is an arithmetic number, because the mean of its divisors is an integer number (48051518584).

Almost surely, 2^168180315037 is an apocalyptic number.

It is an amenable number.

168180315037 is a deficient number, since it is larger than the sum of its proper divisors (24025759299).

168180315037 is an equidigital number, since it uses as much as digits as its factorization.

168180315037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24025759298.

The product of its (nonzero) digits is 120960, while the sum is 43.

Adding to 168180315037 its reverse (730513081861), we get a palindrome (898693396898).

The spelling of 168180315037 in words is "one hundred sixty-eight billion, one hundred eighty million, three hundred fifteen thousand, thirty-seven".