72194168141 has 16 divisors (see below), whose sum is σ = 77249329344. Its totient is φ = 67232519424.

The previous prime is 72194168131. The next prime is 72194168161. The reversal of 72194168141 is 14186149127.

It is a cyclic number.

It is not a de Polignac number, because 72194168141 - 2²² = 72189973837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72194168092 and 72194168101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72194168131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571631 + ... + 686403.

It is an arithmetic number, because the mean of its divisors is an integer number (4828083084).

Almost surely, 2^72194168141 is an apocalyptic number.

It is an amenable number.

72194168141 is a deficient number, since it is larger than the sum of its proper divisors (5055161203).

72194168141 is a wasteful number, since it uses less digits than its factorization.

72194168141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115180.

The product of its digits is 96768, while the sum is 44.

The spelling of 72194168141 in words is "seventy-two billion, one hundred ninety-four million, one hundred sixty-eight thousand, one hundred forty-one".