161330624141 has 4 divisors (see below), whose sum is σ = 161393720412. Its totient is φ = 161267527872.

The previous prime is 161330624131. The next prime is 161330624171. The reversal of 161330624141 is 141426033161.

It is a happy number.

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 84631537225 + 76699086916 = 290915^2 + 276946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161330624141 is a prime.

It is a super-2 number, since 2×161330624141² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161330624098 and 161330624107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161330624131) 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, 31544300 + ... + 31549413.

It is an arithmetic number, because the mean of its divisors is an integer number (40348430103).

Almost surely, 2^161330624141 is an apocalyptic number.

It is an amenable number.

161330624141 is a deficient number, since it is larger than the sum of its proper divisors (63096271).

161330624141 is an equidigital number, since it uses as much as digits as its factorization.

161330624141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63096270.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 161330624141 in words is "one hundred sixty-one billion, three hundred thirty million, six hundred twenty-four thousand, one hundred forty-one".