766662371007983 has 2 divisors, whose sum is σ = 766662371007984. Its totient is φ = 766662371007982.

The previous prime is 766662371007947. The next prime is 766662371007991. The reversal of 766662371007983 is 389700173266667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 766662371007983 - 2¹⁸ = 766662370745839 is a prime.

It is a super-2 number, since 2×766662371007983² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766662371007283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383331185503991 + 383331185503992.

It is an arithmetic number, because the mean of its divisors is an integer number (383331185503992).

Almost surely, 2^{766662371007983} is an apocalyptic number.

766662371007983 is a deficient number, since it is larger than the sum of its proper divisors (1).

766662371007983 is an equidigital number, since it uses as much as digits as its factorization.

766662371007983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576108288, while the sum is 71.

The spelling of 766662371007983 in words is "seven hundred sixty-six trillion, six hundred sixty-two billion, three hundred seventy-one million, seven thousand, nine hundred eighty-three".