77743618553311 has 2 divisors, whose sum is σ = 77743618553312. Its totient is φ = 77743618553310.

The previous prime is 77743618553287. The next prime is 77743618553327. The reversal of 77743618553311 is 11335581634777.

It is a strong prime.

It is an emirp because it is prime and its reverse (11335581634777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77743618553311 - 2²¹ = 77743616456159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77743618553311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77743618553411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38871809276655 + 38871809276656.

It is an arithmetic number, because the mean of its divisors is an integer number (38871809276656).

Almost surely, 2^{77743618553311} is an apocalyptic number.

77743618553311 is a deficient number, since it is larger than the sum of its proper divisors (1).

77743618553311 is an equidigital number, since it uses as much as digits as its factorization.

77743618553311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44452800, while the sum is 61.

The spelling of 77743618553311 in words is "seventy-seven trillion, seven hundred forty-three billion, six hundred eighteen million, five hundred fifty-three thousand, three hundred eleven".