67751132539477 has 2 divisors, whose sum is σ = 67751132539478. Its totient is φ = 67751132539476.

The previous prime is 67751132539459. The next prime is 67751132539487. The reversal of 67751132539477 is 77493523115776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36981856975441 + 30769275564036 = 6081271^2 + 5547006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67751132539477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67751132539417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33875566269738 + 33875566269739.

It is an arithmetic number, because the mean of its divisors is an integer number (33875566269739).

Almost surely, 2^{67751132539477} is an apocalyptic number.

It is an amenable number.

67751132539477 is a deficient number, since it is larger than the sum of its proper divisors (1).

67751132539477 is an equidigital number, since it uses as much as digits as its factorization.

67751132539477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233377200, while the sum is 67.

The spelling of 67751132539477 in words is "sixty-seven trillion, seven hundred fifty-one billion, one hundred thirty-two million, five hundred thirty-nine thousand, four hundred seventy-seven".