161541945260 has 12 divisors (see below), whose sum is σ = 339238085088. Its totient is φ = 64616778096.

The previous prime is 161541945247. The next prime is 161541945287. The reversal of 161541945260 is 62549145161.

It is a super-3 number, since 3×161541945260³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4038548612 + ... + 4038548651.

It is an arithmetic number, because the mean of its divisors is an integer number (28269840424).

Almost surely, 2^161541945260 is an apocalyptic number.

161541945260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161541945260 is an abundant number, since it is smaller than the sum of its proper divisors (177696139828).

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

161541945260 is a wasteful number, since it uses less digits than its factorization.

161541945260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077097272 (or 8077097270 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 161541945260 in words is "one hundred sixty-one billion, five hundred forty-one million, nine hundred forty-five thousand, two hundred sixty".