161533352043 has 24 divisors (see below), whose sum is σ = 266689893600. Its totient is φ = 92293812864.

The previous prime is 161533352041. The next prime is 161533352047. The reversal of 161533352043 is 340253335161.

161533352043 is a `hidden beast` number, since 1 + 61 + 5 + 3 + 33 + 520 + 43 = 666.

It is not a de Polignac number, because 161533352043 - 2¹ = 161533352041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161533351989 and 161533352007.

It is not an unprimeable number, because it can be changed into a prime (161533352041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398263 + ... + 694031.

It is an arithmetic number, because the mean of its divisors is an integer number (11112078900).

Almost surely, 2^161533352043 is an apocalyptic number.

161533352043 is a deficient number, since it is larger than the sum of its proper divisors (105156541557).

161533352043 is a wasteful number, since it uses less digits than its factorization.

161533352043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304451 (or 304448 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The spelling of 161533352043 in words is "one hundred sixty-one billion, five hundred thirty-three million, three hundred fifty-two thousand, forty-three".