77766673351 has 2 divisors, whose sum is σ = 77766673352. Its totient is φ = 77766673350.

The previous prime is 77766673343. The next prime is 77766673357. The reversal of 77766673351 is 15337666777.

It is a strong prime.

It is an emirp because it is prime and its reverse (15337666777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77766673351 - 2³ = 77766673343 is a prime.

It is a super-2 number, since 2×77766673351² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77766673357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38883336675 + 38883336676.

It is an arithmetic number, because the mean of its divisors is an integer number (38883336676).

Almost surely, 2^77766673351 is an apocalyptic number.

77766673351 is a deficient number, since it is larger than the sum of its proper divisors (1).

77766673351 is an equidigital number, since it uses as much as digits as its factorization.

77766673351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23337720, while the sum is 58.

The spelling of 77766673351 in words is "seventy-seven billion, seven hundred sixty-six million, six hundred seventy-three thousand, three hundred fifty-one".