161095503202 has 4 divisors (see below), whose sum is σ = 241643254806. Its totient is φ = 80547751600.

The previous prime is 161095503169. The next prime is 161095503209. The reversal of 161095503202 is 202305590161.

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

It can be written as a sum of positive squares in only one way, i.e., 144963709081 + 16131794121 = 380741^2 + 127011^2 .

It is a super-2 number, since 2×161095503202² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161095503209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40273875799 + ... + 40273875802.

Almost surely, 2^161095503202 is an apocalyptic number.

161095503202 is a deficient number, since it is larger than the sum of its proper divisors (80547751604).

161095503202 is an equidigital number, since it uses as much as digits as its factorization.

161095503202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80547751603.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 161095503202 in words is "one hundred sixty-one billion, ninety-five million, five hundred three thousand, two hundred two".