161540476924 has 12 divisors (see below), whose sum is σ = 282710669248. Its totient is φ = 80766000000.

The previous prime is 161540476901. The next prime is 161540476943. The reversal of 161540476924 is 429674045161.

161540476924 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973077 + ... + 1126924.

Almost surely, 2^161540476924 is an apocalyptic number.

It is an amenable number.

161540476924 is a deficient number, since it is larger than the sum of its proper divisors (121170192324).

161540476924 is a wasteful number, since it uses less digits than its factorization.

161540476924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119236 (or 2119234 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 161540476924 in words is "one hundred sixty-one billion, five hundred forty million, four hundred seventy-six thousand, nine hundred twenty-four".