72303205771 has 2 divisors, whose sum is σ = 72303205772. Its totient is φ = 72303205770.

The previous prime is 72303205757. The next prime is 72303205813. The reversal of 72303205771 is 17750230327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72303205771 - 2²⁹ = 71766334859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72303205771.

It is not a weakly prime, because it can be changed into another prime (72303200771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36151602885 + 36151602886.

It is an arithmetic number, because the mean of its divisors is an integer number (36151602886).

Almost surely, 2^72303205771 is an apocalyptic number.

72303205771 is a deficient number, since it is larger than the sum of its proper divisors (1).

72303205771 is an equidigital number, since it uses as much as digits as its factorization.

72303205771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 37.

The spelling of 72303205771 in words is "seventy-two billion, three hundred three million, two hundred five thousand, seven hundred seventy-one".