66595775402 has 32 divisors (see below), whose sum is σ = 108565894080. Its totient is φ = 30455429760.

The previous prime is 66595775381. The next prime is 66595775417. The reversal of 66595775402 is 20457759566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282313 + ... + 1333235.

It is an arithmetic number, because the mean of its divisors is an integer number (3392684190).

Almost surely, 2^66595775402 is an apocalyptic number.

66595775402 is a deficient number, since it is larger than the sum of its proper divisors (41970118678).

66595775402 is a wasteful number, since it uses less digits than its factorization.

66595775402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51398.

The product of its (nonzero) digits is 15876000, while the sum is 56.

The spelling of 66595775402 in words is "sixty-six billion, five hundred ninety-five million, seven hundred seventy-five thousand, four hundred two".