55665506066 has 16 divisors (see below), whose sum is σ = 86198992128. Its totient is φ = 26932659600.

The previous prime is 55665506053. The next prime is 55665506077. The reversal of 55665506066 is 66060556655.

It is a happy 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, 888101 + ... + 948711.

It is an arithmetic number, because the mean of its divisors is an integer number (5387437008).

Almost surely, 2^55665506066 is an apocalyptic number.

55665506066 is a deficient number, since it is larger than the sum of its proper divisors (30533486062).

55665506066 is a wasteful number, since it uses less digits than its factorization.

55665506066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75457.

The product of its (nonzero) digits is 4860000, while the sum is 50.

The spelling of 55665506066 in words is "fifty-five billion, six hundred sixty-five million, five hundred six thousand, sixty-six".