7162121000077 has 2 divisors, whose sum is σ = 7162121000078. Its totient is φ = 7162121000076.

The previous prime is 7162121000057. The next prime is 7162121000081. The reversal of 7162121000077 is 7700001212617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6461260693801 + 700860306276 = 2541901^2 + 837174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7162121000077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7162121000057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3581060500038 + 3581060500039.

It is an arithmetic number, because the mean of its divisors is an integer number (3581060500039).

Almost surely, 2^{7162121000077} is an apocalyptic number.

It is an amenable number.

7162121000077 is a deficient number, since it is larger than the sum of its proper divisors (1).

7162121000077 is an equidigital number, since it uses as much as digits as its factorization.

7162121000077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 34.

The spelling of 7162121000077 in words is "seven trillion, one hundred sixty-two billion, one hundred twenty-one million, seventy-seven", and thus it is an aban number.