72723400147 has 6 divisors (see below), whose sum is σ = 74540405324. Its totient is φ = 70949657040.

The previous prime is 72723400133. The next prime is 72723400159. The reversal of 72723400147 is 74100432727.

It is a de Polignac number, because none of the positive numbers 2^k-72723400147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72723400117) 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 5 ways as a sum of consecutive naturals, for example, 21629313 + ... + 21632674.

Almost surely, 2^72723400147 is an apocalyptic number.

72723400147 is a deficient number, since it is larger than the sum of its proper divisors (1817005177).

72723400147 is an equidigital number, since it uses as much as digits as its factorization.

72723400147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43262069 (or 43262028 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The spelling of 72723400147 in words is "seventy-two billion, seven hundred twenty-three million, four hundred thousand, one hundred forty-seven".