161029272533 has 32 divisors (see below), whose sum is σ = 177916684032. Its totient is φ = 145145728000.

The previous prime is 161029272497. The next prime is 161029272641. The reversal of 161029272533 is 335272920161.

It is not a de Polignac number, because 161029272533 - 2¹⁰ = 161029271509 is a prime.

It is a super-2 number, since 2×161029272533² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161029272433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6448610 + ... + 6473532.

It is an arithmetic number, because the mean of its divisors is an integer number (5559896376).

Almost surely, 2^161029272533 is an apocalyptic number.

It is an amenable number.

161029272533 is a deficient number, since it is larger than the sum of its proper divisors (16887411499).

161029272533 is a wasteful number, since it uses less digits than its factorization.

161029272533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25165.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 161029272533 in words is "one hundred sixty-one billion, twenty-nine million, two hundred seventy-two thousand, five hundred thirty-three".