69440660066 has 16 divisors (see below), whose sum is σ = 104925542400. Its totient is φ = 34465551888.

The previous prime is 69440660057. The next prime is 69440660123. The reversal of 69440660066 is 66006604496.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 69440660066.

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, 2570015 + ... + 2596893.

It is an arithmetic number, because the mean of its divisors is an integer number (6557846400).

Almost surely, 2^69440660066 is an apocalyptic number.

69440660066 is a deficient number, since it is larger than the sum of its proper divisors (35484882334).

69440660066 is a wasteful number, since it uses less digits than its factorization.

69440660066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36313.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 69440660066 in words is "sixty-nine billion, four hundred forty million, six hundred sixty thousand, sixty-six".