161293324576 has 12 divisors (see below), whose sum is σ = 317546232822. Its totient is φ = 80646662272.

The previous prime is 161293324571. The next prime is 161293324579. The reversal of 161293324576 is 675423392161.

It can be written as a sum of positive squares in only one way, i.e., 103825728400 + 57467596176 = 322220^2 + 239724^2 .

It is not an unprimeable number, because it can be changed into a prime (161293324571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2520208165 + ... + 2520208228.

Almost surely, 2^161293324576 is an apocalyptic number.

161293324576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161293324576 is a deficient number, since it is larger than the sum of its proper divisors (156252908246).

161293324576 is an equidigital number, since it uses as much as digits as its factorization.

161293324576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040416403 (or 5040416395 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The spelling of 161293324576 in words is "one hundred sixty-one billion, two hundred ninety-three million, three hundred twenty-four thousand, five hundred seventy-six".