72335143897 has 2 divisors, whose sum is σ = 72335143898. Its totient is φ = 72335143896.

The previous prime is 72335143889. The next prime is 72335143913. The reversal of 72335143897 is 79834153327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56832652816 + 15502491081 = 238396^2 + 124509^2 .

It is a cyclic number.

It is not a de Polignac number, because 72335143897 - 2³ = 72335143889 is a prime.

It is not a weakly prime, because it can be changed into another prime (72335143817) 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 as a sum of consecutive naturals, namely, 36167571948 + 36167571949.

It is an arithmetic number, because the mean of its divisors is an integer number (36167571949).

Almost surely, 2^72335143897 is an apocalyptic number.

It is an amenable number.

72335143897 is a deficient number, since it is larger than the sum of its proper divisors (1).

72335143897 is an equidigital number, since it uses as much as digits as its factorization.

72335143897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 52.

The spelling of 72335143897 in words is "seventy-two billion, three hundred thirty-five million, one hundred forty-three thousand, eight hundred ninety-seven".