77988981441211 has 2 divisors, whose sum is σ = 77988981441212. Its totient is φ = 77988981441210.

The previous prime is 77988981441199. The next prime is 77988981441233. The reversal of 77988981441211 is 11214418988977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77988981441211 - 2¹³ = 77988981433019 is a prime.

It is not a weakly prime, because it can be changed into another prime (77988981441271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38994490720605 + 38994490720606.

It is an arithmetic number, because the mean of its divisors is an integer number (38994490720606).

Almost surely, 2^{77988981441211} is an apocalyptic number.

77988981441211 is a deficient number, since it is larger than the sum of its proper divisors (1).

77988981441211 is an equidigital number, since it uses as much as digits as its factorization.

77988981441211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65028096, while the sum is 70.

The spelling of 77988981441211 in words is "seventy-seven trillion, nine hundred eighty-eight billion, nine hundred eighty-one million, four hundred forty-one thousand, two hundred eleven".