72475021337 has 2 divisors, whose sum is σ = 72475021338. Its totient is φ = 72475021336.

The previous prime is 72475021331. The next prime is 72475021363. The reversal of 72475021337 is 73312057427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72051443776 + 423577561 = 268424^2 + 20581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72475021337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72475021294 and 72475021303.

It is not a weakly prime, because it can be changed into another prime (72475021331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36237510668 + 36237510669.

It is an arithmetic number, because the mean of its divisors is an integer number (36237510669).

Almost surely, 2^72475021337 is an apocalyptic number.

It is an amenable number.

72475021337 is a deficient number, since it is larger than the sum of its proper divisors (1).

72475021337 is an equidigital number, since it uses as much as digits as its factorization.

72475021337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 72475021337 in words is "seventy-two billion, four hundred seventy-five million, twenty-one thousand, three hundred thirty-seven".