161310535344 has 160 divisors (see below), whose sum is σ = 557017920000. Its totient is φ = 43662986496.

The previous prime is 161310535327. The next prime is 161310535381. The reversal of 161310535344 is 443535013161.

161310535344 is a `hidden beast` number, since 1 + 6 + 13 + 105 + 3 + 534 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 161310535299 and 161310535308.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1346319 + ... + 1461230.

It is an arithmetic number, because the mean of its divisors is an integer number (3481362000).

Almost surely, 2^161310535344 is an apocalyptic number.

161310535344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161310535344 is an abundant number, since it is smaller than the sum of its proper divisors (395707384656).

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

161310535344 is a wasteful number, since it uses less digits than its factorization.

161310535344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807592 (or 2807580 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 161310535344 in words is "one hundred sixty-one billion, three hundred ten million, five hundred thirty-five thousand, three hundred forty-four".