72300040181 has 16 divisors (see below), whose sum is σ = 73354248000. Its totient is φ = 71255251200.

The previous prime is 72300040177. The next prime is 72300040229. The reversal of 72300040181 is 18104000327.

It is a cyclic number.

It is not a de Polignac number, because 72300040181 - 2² = 72300040177 is a prime.

It is a super-2 number, since 2×72300040181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72300040181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72300040481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13092701 + ... + 13098221.

It is an arithmetic number, because the mean of its divisors is an integer number (4584640500).

Almost surely, 2^72300040181 is an apocalyptic number.

It is an amenable number.

72300040181 is a deficient number, since it is larger than the sum of its proper divisors (1054207819).

72300040181 is a wasteful number, since it uses less digits than its factorization.

72300040181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340.

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 72300040181 in words is "seventy-two billion, three hundred million, forty thousand, one hundred eighty-one".