67487262457 has 2 divisors, whose sum is σ = 67487262458. Its totient is φ = 67487262456.

The previous prime is 67487262289. The next prime is 67487262497. The reversal of 67487262457 is 75426278476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57838326016 + 9648936441 = 240496^2 + 98229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67487262457 is a prime.

It is not a weakly prime, because it can be changed into another prime (67487262497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33743631228 + 33743631229.

It is an arithmetic number, because the mean of its divisors is an integer number (33743631229).

Almost surely, 2^67487262457 is an apocalyptic number.

It is an amenable number.

67487262457 is a deficient number, since it is larger than the sum of its proper divisors (1).

67487262457 is an equidigital number, since it uses as much as digits as its factorization.

67487262457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31610880, while the sum is 58.

The spelling of 67487262457 in words is "sixty-seven billion, four hundred eighty-seven million, two hundred sixty-two thousand, four hundred fifty-seven".