66110655074 has 4 divisors (see below), whose sum is σ = 99165982614. Its totient is φ = 33055327536.

The previous prime is 66110655031. The next prime is 66110655089. The reversal of 66110655074 is 47055601166.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57579361849 + 8531293225 = 239957^2 + 92365^2 .

It is a super-3 number, since 3×66110655074³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16527663767 + ... + 16527663770.

Almost surely, 2^66110655074 is an apocalyptic number.

66110655074 is a deficient number, since it is larger than the sum of its proper divisors (33055327540).

66110655074 is a wasteful number, since it uses less digits than its factorization.

66110655074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33055327539.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 66110655074 in words is "sixty-six billion, one hundred ten million, six hundred fifty-five thousand, seventy-four".