66614677734 has 16 divisors (see below), whose sum is σ = 145341115200. Its totient is φ = 20186265960.

The previous prime is 66614677721. The next prime is 66614677777. The reversal of 66614677734 is 43777641666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504656584 + ... + 504656715.

It is an arithmetic number, because the mean of its divisors is an integer number (9083819700).

Almost surely, 2^66614677734 is an apocalyptic number.

66614677734 is an abundant number, since it is smaller than the sum of its proper divisors (78726437466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66614677734 is a wasteful number, since it uses less digits than its factorization.

66614677734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009313315.

The product of its digits is 21337344, while the sum is 57.

The spelling of 66614677734 in words is "sixty-six billion, six hundred fourteen million, six hundred seventy-seven thousand, seven hundred thirty-four".