766506106173 has 4 divisors (see below), whose sum is σ = 1022008141568. Its totient is φ = 511004070780.

The previous prime is 766506106159. The next prime is 766506106259. The reversal of 766506106173 is 371601605667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 766506106173 - 2²⁰ = 766505057597 is a prime.

It is a super-2 number, since 2×766506106173² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766506106123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127751017693 + ... + 127751017698.

It is an arithmetic number, because the mean of its divisors is an integer number (255502035392).

Almost surely, 2^766506106173 is an apocalyptic number.

It is an amenable number.

766506106173 is a deficient number, since it is larger than the sum of its proper divisors (255502035395).

766506106173 is a wasteful number, since it uses less digits than its factorization.

766506106173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255502035394.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 766506106173 in words is "seven hundred sixty-six billion, five hundred six million, one hundred six thousand, one hundred seventy-three".