161603676234 has 960 divisors, whose sum is σ = 540653895936. Its totient is φ = 34712064000.

The previous prime is 161603676233. The next prime is 161603676253. The reversal of 161603676234 is 432676306161.

161603676234 is a `hidden beast` number, since 1 + 6 + 1 + 603 + 6 + 7 + 6 + 2 + 34 = 666.

It is a super-2 number, since 2×161603676234² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161603676234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161603676233) by changing a digit.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 2649240564 + ... + 2649240624.

Almost surely, 2^161603676234 is an apocalyptic number.

161603676234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161603676234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270326947968).

161603676234 is an abundant number, since it is smaller than the sum of its proper divisors (379050219702).

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

161603676234 is a wasteful number, since it uses less digits than its factorization.

161603676234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 161603676234 in words is "one hundred sixty-one billion, six hundred three million, six hundred seventy-six thousand, two hundred thirty-four".