77044531211 has 2 divisors, whose sum is σ = 77044531212. Its totient is φ = 77044531210.

The previous prime is 77044531189. The next prime is 77044531237. The reversal of 77044531211 is 11213544077.

It is a weak prime.

It is an emirp because it is prime and its reverse (11213544077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77044531211 - 2³⁴ = 59864662027 is a prime.

It is not a weakly prime, because it can be changed into another prime (77044531271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38522265605 + 38522265606.

It is an arithmetic number, because the mean of its divisors is an integer number (38522265606).

Almost surely, 2^77044531211 is an apocalyptic number.

77044531211 is a deficient number, since it is larger than the sum of its proper divisors (1).

77044531211 is an equidigital number, since it uses as much as digits as its factorization.

77044531211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 77044531211 in words is "seventy-seven billion, forty-four million, five hundred thirty-one thousand, two hundred eleven".