17973325157 has 8 divisors (see below), whose sum is σ = 19686807000. Its totient is φ = 16332757504.

The previous prime is 17973325129. The next prime is 17973325187. The reversal of 17973325157 is 75152337971.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1115159236 + 16858165921 = 33394^2 + 129839^2 .

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 17973325157 - 2³⁴ = 793455973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17973325127) 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, 18228032 + ... + 18229017.

It is an arithmetic number, because the mean of its divisors is an integer number (2460850875).

Almost surely, 2^17973325157 is an apocalyptic number.

17973325157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

17973325157 is a deficient number, since it is larger than the sum of its proper divisors (1713481843).

17973325157 is a wasteful number, since it uses less digits than its factorization.

17973325157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36457095.

The product of its digits is 1389150, while the sum is 50.

The spelling of 17973325157 in words is "seventeen billion, nine hundred seventy-three million, three hundred twenty-five thousand, one hundred fifty-seven".