156161305506 has 16 divisors (see below), whose sum is σ = 312521434848. Its totient is φ = 52020631200.

The previous prime is 156161305493. The next prime is 156161305507. The reversal of 156161305506 is 605503161651.

156161305506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (156161305507) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8274115 + ... + 8292966.

It is an arithmetic number, because the mean of its divisors is an integer number (19532589678).

Almost surely, 2^156161305506 is an apocalyptic number.

156161305506 is an abundant number, since it is smaller than the sum of its proper divisors (156360129342).

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

156161305506 is a wasteful number, since it uses less digits than its factorization.

156161305506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16568657.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 156161305506 in words is "one hundred fifty-six billion, one hundred sixty-one million, three hundred five thousand, five hundred six".