77734615486673 has 2 divisors, whose sum is σ = 77734615486674. Its totient is φ = 77734615486672.

The previous prime is 77734615486669. The next prime is 77734615486691. The reversal of 77734615486673 is 37668451643777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77466895134784 + 267720351889 = 8801528^2 + 517417^2 .

It is a cyclic number.

It is not a de Polignac number, because 77734615486673 - 2² = 77734615486669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77734615486673.

It is not a weakly prime, because it can be changed into another prime (77734615486573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38867307743336 + 38867307743337.

It is an arithmetic number, because the mean of its divisors is an integer number (38867307743337).

Almost surely, 2^{77734615486673} is an apocalyptic number.

It is an amenable number.

77734615486673 is a deficient number, since it is larger than the sum of its proper divisors (1).

77734615486673 is an equidigital number, since it uses as much as digits as its factorization.

77734615486673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2987228160, while the sum is 74.

The spelling of 77734615486673 in words is "seventy-seven trillion, seven hundred thirty-four billion, six hundred fifteen million, four hundred eighty-six thousand, six hundred seventy-three".