161435928946 has 8 divisors (see below), whose sum is σ = 242414557020. Its totient is φ = 80631076608.

The previous prime is 161435928931. The next prime is 161435928949. The reversal of 161435928946 is 649829534161.

161435928946 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 144054407025 + 17381521921 = 379545^2 + 131839^2 .

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

It is not an unprimeable number, because it can be changed into a prime (161435928949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43441611 + ... + 43445326.

Almost surely, 2^161435928946 is an apocalyptic number.

161435928946 is a deficient number, since it is larger than the sum of its proper divisors (80978628074).

161435928946 is an equidigital number, since it uses as much as digits as its factorization.

161435928946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86887868.

The product of its digits is 11197440, while the sum is 58.

The spelling of 161435928946 in words is "one hundred sixty-one billion, four hundred thirty-five million, nine hundred twenty-eight thousand, nine hundred forty-six".