67202050661 has 2 divisors, whose sum is σ = 67202050662. Its totient is φ = 67202050660.

The previous prime is 67202050633. The next prime is 67202050679. The reversal of 67202050661 is 16605020276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50033189761 + 17168860900 = 223681^2 + 131030^2 .

It is a cyclic number.

It is not a de Polignac number, because 67202050661 - 2¹⁸ = 67201788517 is a prime.

It is a super-2 number, since 2×67202050661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67202050691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33601025330 + 33601025331.

It is an arithmetic number, because the mean of its divisors is an integer number (33601025331).

Almost surely, 2^67202050661 is an apocalyptic number.

It is an amenable number.

67202050661 is a deficient number, since it is larger than the sum of its proper divisors (1).

67202050661 is an equidigital number, since it uses as much as digits as its factorization.

67202050661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 67202050661 in words is "sixty-seven billion, two hundred two million, fifty thousand, six hundred sixty-one".