156421142166 has 16 divisors (see below), whose sum is σ = 313070153904. Its totient is φ = 52102402464.

The previous prime is 156421142161. The next prime is 156421142177. The reversal of 156421142166 is 661241124651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156421142161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9485641 + ... + 9502116.

It is an arithmetic number, because the mean of its divisors is an integer number (19566884619).

Almost surely, 2^156421142166 is an apocalyptic number.

156421142166 is an abundant number, since it is smaller than the sum of its proper divisors (156649011738).

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

156421142166 is a wasteful number, since it uses less digits than its factorization.

156421142166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18989135.

The product of its digits is 69120, while the sum is 39.

The spelling of 156421142166 in words is "one hundred fifty-six billion, four hundred twenty-one million, one hundred forty-two thousand, one hundred sixty-six".