66616126036 has 12 divisors (see below), whose sum is σ = 116945977428. Its totient is φ = 33202989632.

The previous prime is 66616125991. The next prime is 66616126099. The reversal of 66616126036 is 63062161666.

It can be written as a sum of positive squares in 2 ways, for example, as 25187594436 + 41428531600 = 158706^2 + 203540^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66616125983 and 66616126001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26266921 + ... + 26269456.

It is an arithmetic number, because the mean of its divisors is an integer number (9745498119).

Almost surely, 2^66616126036 is an apocalyptic number.

It is an amenable number.

66616126036 is a deficient number, since it is larger than the sum of its proper divisors (50329851392).

66616126036 is a wasteful number, since it uses less digits than its factorization.

66616126036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52536698 (or 52536696 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 66616126036 in words is "sixty-six billion, six hundred sixteen million, one hundred twenty-six thousand, thirty-six".