67562624467661 has 2 divisors, whose sum is σ = 67562624467662. Its totient is φ = 67562624467660.

The previous prime is 67562624467649. The next prime is 67562624467711. The reversal of 67562624467661 is 16676442626576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67491252673636 + 71371794025 = 8215306^2 + 267155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67562624467661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67562624467591 and 67562624467600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67562624467601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33781312233830 + 33781312233831.

It is an arithmetic number, because the mean of its divisors is an integer number (33781312233831).

Almost surely, 2^{67562624467661} is an apocalyptic number.

It is an amenable number.

67562624467661 is a deficient number, since it is larger than the sum of its proper divisors (1).

67562624467661 is an equidigital number, since it uses as much as digits as its factorization.

67562624467661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 731566080, while the sum is 68.

The spelling of 67562624467661 in words is "sixty-seven trillion, five hundred sixty-two billion, six hundred twenty-four million, four hundred sixty-seven thousand, six hundred sixty-one".