161502040506 has 8 divisors (see below), whose sum is σ = 323004081024. Its totient is φ = 53834013500.

The previous prime is 161502040499. The next prime is 161502040523. The reversal of 161502040506 is 605040205161.

161502040506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

161502040506 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13458503370 + ... + 13458503381.

It is an arithmetic number, because the mean of its divisors is an integer number (40375510128).

Almost surely, 2^161502040506 is an apocalyptic number.

161502040506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161502040506 is a wasteful number, since it uses less digits than its factorization.

161502040506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26917006756.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 161502040506 its reverse (605040205161), we get a palindrome (766542245667).

The spelling of 161502040506 in words is "one hundred sixty-one billion, five hundred two million, forty thousand, five hundred six".