72330323957 has 2 divisors, whose sum is σ = 72330323958. Its totient is φ = 72330323956.

The previous prime is 72330323899. The next prime is 72330323969. The reversal of 72330323957 is 75932303327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62744739121 + 9585584836 = 250489^2 + 97906^2 .

It is an emirp because it is prime and its reverse (75932303327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72330323957 - 2³² = 68035356661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72330323557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36165161978 + 36165161979.

It is an arithmetic number, because the mean of its divisors is an integer number (36165161979).

Almost surely, 2^72330323957 is an apocalyptic number.

It is an amenable number.

72330323957 is a deficient number, since it is larger than the sum of its proper divisors (1).

72330323957 is an equidigital number, since it uses as much as digits as its factorization.

72330323957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 44.

The spelling of 72330323957 in words is "seventy-two billion, three hundred thirty million, three hundred twenty-three thousand, nine hundred fifty-seven".