161232063677 has 4 divisors (see below), whose sum is σ = 164274178140. Its totient is φ = 158189949216.

The previous prime is 161232063667. The next prime is 161232063689. The reversal of 161232063677 is 776360232161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105114717796 + 56117345881 = 324214^2 + 236891^2 .

It is a cyclic number.

It is not a de Polignac number, because 161232063677 - 2²⁶ = 161164954813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161232063607) 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, 1521057152 + ... + 1521057257.

It is an arithmetic number, because the mean of its divisors is an integer number (41068544535).

Almost surely, 2^161232063677 is an apocalyptic number.

It is an amenable number.

161232063677 is a deficient number, since it is larger than the sum of its proper divisors (3042114463).

161232063677 is an equidigital number, since it uses as much as digits as its factorization.

161232063677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042114462.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 161232063677 in words is "one hundred sixty-one billion, two hundred thirty-two million, sixty-three thousand, six hundred seventy-seven".