66769517158 has 16 divisors (see below), whose sum is σ = 100258512480. Its totient is φ = 33350034816.

The previous prime is 66769517149. The next prime is 66769517161. The reversal of 66769517158 is 85171596766.

It is a junction number, because it is equal to n+sod(n) for n = 66769517096 and 66769517105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10883860 + ... + 10889992.

It is an arithmetic number, because the mean of its divisors is an integer number (6266157030).

Almost surely, 2^66769517158 is an apocalyptic number.

66769517158 is a deficient number, since it is larger than the sum of its proper divisors (33488995322).

66769517158 is a wasteful number, since it uses less digits than its factorization.

66769517158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10911.

The product of its digits is 19051200, while the sum is 61.

The spelling of 66769517158 in words is "sixty-six billion, seven hundred sixty-nine million, five hundred seventeen thousand, one hundred fifty-eight".