766666884371 has 2 divisors, whose sum is σ = 766666884372. Its totient is φ = 766666884370.

The previous prime is 766666884337. The next prime is 766666884479. The reversal of 766666884371 is 173488666667.

It is a weak prime.

It is an emirp because it is prime and its reverse (173488666667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 766666884371 - 2⁶ = 766666884307 is a prime.

It is a super-2 number, since 2×766666884371² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (766666884271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383333442185 + 383333442186.

It is an arithmetic number, because the mean of its divisors is an integer number (383333442186).

Almost surely, 2^766666884371 is an apocalyptic number.

766666884371 is a deficient number, since it is larger than the sum of its proper divisors (1).

766666884371 is an equidigital number, since it uses as much as digits as its factorization.

766666884371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 292626432, while the sum is 68.

The spelling of 766666884371 in words is "seven hundred sixty-six billion, six hundred sixty-six million, eight hundred eighty-four thousand, three hundred seventy-one".