161502040436 has 12 divisors (see below), whose sum is σ = 308322077280. Its totient is φ = 73410018360.

The previous prime is 161502040417. The next prime is 161502040463. The reversal of 161502040436 is 634040205161.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1835250416 + ... + 1835250503.

It is an arithmetic number, because the mean of its divisors is an integer number (25693506440).

Almost surely, 2^161502040436 is an apocalyptic number.

It is an amenable number.

161502040436 is a deficient number, since it is larger than the sum of its proper divisors (146820036844).

161502040436 is a wasteful number, since it uses less digits than its factorization.

161502040436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670500934 (or 3670500932 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 161502040436 its reverse (634040205161), we get a palindrome (795542245597).

The spelling of 161502040436 in words is "one hundred sixty-one billion, five hundred two million, forty thousand, four hundred thirty-six".