161197432063 has 8 divisors (see below), whose sum is σ = 162286692656. Its totient is φ = 160109395200.

The previous prime is 161197432037. The next prime is 161197432091. The reversal of 161197432063 is 360234791161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161197432063 is a prime.

It is a super-2 number, since 2×161197432063² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161197432013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40818 + ... + 569263.

It is an arithmetic number, because the mean of its divisors is an integer number (20285836582).

Almost surely, 2^161197432063 is an apocalyptic number.

161197432063 is a deficient number, since it is larger than the sum of its proper divisors (1089260593).

161197432063 is a wasteful number, since it uses less digits than its factorization.

161197432063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611865.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 161197432063 in words is "one hundred sixty-one billion, one hundred ninety-seven million, four hundred thirty-two thousand, sixty-three".