151323663173 has 4 divisors (see below), whose sum is σ = 155014484268. Its totient is φ = 147632842080.

The previous prime is 151323663163. The next prime is 151323663199. The reversal of 151323663173 is 371366323151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371366323151 = 227267 ⋅1634053.

It can be written as a sum of positive squares in 2 ways, for example, as 13331473444 + 137992189729 = 115462^2 + 371473^2 .

It is a cyclic number.

It is not a de Polignac number, because 151323663173 - 2⁴ = 151323663157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3690821053 = 151323663173 / (1 + 5 + 1 + 3 + 2 + 3 + 6 + 6 + 3 + 1 + 7 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151323663173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151323663103) 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, 1845410486 + ... + 1845410567.

It is an arithmetic number, because the mean of its divisors is an integer number (38753621067).

Almost surely, 2^151323663173 is an apocalyptic number.

It is an amenable number.

151323663173 is a deficient number, since it is larger than the sum of its proper divisors (3690821095).

151323663173 is an equidigital number, since it uses as much as digits as its factorization.

151323663173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690821094.

The product of its digits is 204120, while the sum is 41.

The spelling of 151323663173 in words is "one hundred fifty-one billion, three hundred twenty-three million, six hundred sixty-three thousand, one hundred seventy-three".