77344812211 has 2 divisors, whose sum is σ = 77344812212. Its totient is φ = 77344812210.

The previous prime is 77344812157. The next prime is 77344812269. The reversal of 77344812211 is 11221844377.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77344812211 - 2¹¹ = 77344810163 is a prime.

It is not a weakly prime, because it can be changed into another prime (77344812511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38672406105 + 38672406106.

It is an arithmetic number, because the mean of its divisors is an integer number (38672406106).

Almost surely, 2^77344812211 is an apocalyptic number.

77344812211 is a deficient number, since it is larger than the sum of its proper divisors (1).

77344812211 is an equidigital number, since it uses as much as digits as its factorization.

77344812211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The spelling of 77344812211 in words is "seventy-seven billion, three hundred forty-four million, eight hundred twelve thousand, two hundred eleven".