77766166683419 has 2 divisors, whose sum is σ = 77766166683420. Its totient is φ = 77766166683418.

The previous prime is 77766166683349. The next prime is 77766166683437. The reversal of 77766166683419 is 91438666166777.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77766166683419 is a prime.

It is a super-2 number, since 2×77766166683419² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77766166683419.

It is not a weakly prime, because it can be changed into another prime (77766166643419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38883083341709 + 38883083341710.

It is an arithmetic number, because the mean of its divisors is an integer number (38883083341710).

Almost surely, 2^{77766166683419} is an apocalyptic number.

77766166683419 is a deficient number, since it is larger than the sum of its proper divisors (1).

77766166683419 is an equidigital number, since it uses as much as digits as its factorization.

77766166683419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304433152, while the sum is 77.

The spelling of 77766166683419 in words is "seventy-seven trillion, seven hundred sixty-six billion, one hundred sixty-six million, six hundred eighty-three thousand, four hundred nineteen".