161875832393 has 8 divisors (see below), whose sum is σ = 176611518336. Its totient is φ = 147143430000.

The previous prime is 161875832381. The next prime is 161875832399. The reversal of 161875832393 is 393238578161.

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 161875832393 - 2¹² = 161875828297 is a prime.

It is a super-2 number, since 2×161875832393² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161875832399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717233 + ... + 915518.

It is an arithmetic number, because the mean of its divisors is an integer number (22076439792).

Almost surely, 2^161875832393 is an apocalyptic number.

It is an amenable number.

161875832393 is a deficient number, since it is larger than the sum of its proper divisors (14735685943).

161875832393 is a wasteful number, since it uses less digits than its factorization.

161875832393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641775.

The product of its digits is 6531840, while the sum is 56.

The spelling of 161875832393 in words is "one hundred sixty-one billion, eight hundred seventy-five million, eight hundred thirty-two thousand, three hundred ninety-three".