161803432374 has 16 divisors (see below), whose sum is σ = 323963663808. Its totient is φ = 53875010952.

The previous prime is 161803432333. The next prime is 161803432379. The reversal of 161803432374 is 473234308161.

It is a super-3 number, since 3×161803432374³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161803432379) 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, 14860732 + ... + 14871615.

It is an arithmetic number, because the mean of its divisors is an integer number (20247728988).

Almost surely, 2^161803432374 is an apocalyptic number.

161803432374 is an abundant number, since it is smaller than the sum of its proper divisors (162160231434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161803432374 is a wasteful number, since it uses less digits than its factorization.

161803432374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29733259.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 161803432374 in words is "one hundred sixty-one billion, eight hundred three million, four hundred thirty-two thousand, three hundred seventy-four".