72016722247 has 2 divisors, whose sum is σ = 72016722248. Its totient is φ = 72016722246.

The previous prime is 72016722161. The next prime is 72016722269. The reversal of 72016722247 is 74222761027.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72016722247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72016720247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36008361123 + 36008361124.

It is an arithmetic number, because the mean of its divisors is an integer number (36008361124).

Almost surely, 2^72016722247 is an apocalyptic number.

72016722247 is a deficient number, since it is larger than the sum of its proper divisors (1).

72016722247 is an equidigital number, since it uses as much as digits as its factorization.

72016722247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 72016722247 in words is "seventy-two billion, sixteen million, seven hundred twenty-two thousand, two hundred forty-seven".