73687238249 has 2 divisors, whose sum is σ = 73687238250. Its totient is φ = 73687238248.

The previous prime is 73687238239. The next prime is 73687238291. The reversal of 73687238249 is 94283278637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63991291225 + 9695947024 = 252965^2 + 98468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73687238249 is a prime.

It is not a weakly prime, because it can be changed into another prime (73687238239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36843619124 + 36843619125.

It is an arithmetic number, because the mean of its divisors is an integer number (36843619125).

Almost surely, 2^73687238249 is an apocalyptic number.

It is an amenable number.

73687238249 is a deficient number, since it is larger than the sum of its proper divisors (1).

73687238249 is an equidigital number, since it uses as much as digits as its factorization.

73687238249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 59.

The spelling of 73687238249 in words is "seventy-three billion, six hundred eighty-seven million, two hundred thirty-eight thousand, two hundred forty-nine".