72330067161 has 72 divisors (see below), whose sum is σ = 121225762944. Its totient is φ = 41205911040.

The previous prime is 72330067157. The next prime is 72330067169. The reversal of 72330067161 is 16176003327.

It is not a de Polignac number, because 72330067161 - 2² = 72330067157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72330067169) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 45290415 + ... + 45292011.

It is an arithmetic number, because the mean of its divisors is an integer number (1683691152).

Almost surely, 2^72330067161 is an apocalyptic number.

It is an amenable number.

72330067161 is a deficient number, since it is larger than the sum of its proper divisors (48895695783).

72330067161 is a wasteful number, since it uses less digits than its factorization.

72330067161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The spelling of 72330067161 in words is "seventy-two billion, three hundred thirty million, sixty-seven thousand, one hundred sixty-one".