161524330112431 has 24 divisors (see below), whose sum is σ = 191217055353632. Its totient is φ = 135533118283200.

The previous prime is 161524330112419. The next prime is 161524330112471. The reversal of 161524330112431 is 134211033425161.

It is a happy number.

It is not a de Polignac number, because 161524330112431 - 2⁷ = 161524330112303 is a prime.

It is a super-2 number, since 2×161524330112431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161524330112471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13677841 + ... + 22586101.

Almost surely, 2^{161524330112431} is an apocalyptic number.

161524330112431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161524330112431 is a deficient number, since it is larger than the sum of its proper divisors (29692725241201).

161524330112431 is a wasteful number, since it uses less digits than its factorization.

161524330112431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919823 (or 8919812 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 161524330112431 its reverse (134211033425161), we get a palindrome (295735363537592).

The spelling of 161524330112431 in words is "one hundred sixty-one trillion, five hundred twenty-four billion, three hundred thirty million, one hundred twelve thousand, four hundred thirty-one".