67374537457 has 2 divisors, whose sum is σ = 67374537458. Its totient is φ = 67374537456.

The previous prime is 67374537449. The next prime is 67374537473. The reversal of 67374537457 is 75473547376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67225599841 + 148937616 = 259279^2 + 12204^2 .

It is a cyclic number.

It is not a de Polignac number, because 67374537457 - 2³ = 67374537449 is a prime.

It is not a weakly prime, because it can be changed into another prime (67374537407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33687268728 + 33687268729.

It is an arithmetic number, because the mean of its divisors is an integer number (33687268729).

Almost surely, 2^67374537457 is an apocalyptic number.

It is an amenable number.

67374537457 is a deficient number, since it is larger than the sum of its proper divisors (1).

67374537457 is an equidigital number, since it uses as much as digits as its factorization.

67374537457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51861600, while the sum is 58.

The spelling of 67374537457 in words is "sixty-seven billion, three hundred seventy-four million, five hundred thirty-seven thousand, four hundred fifty-seven".