66310403882 has 4 divisors (see below), whose sum is σ = 99465605826. Its totient is φ = 33155201940.

The previous prime is 66310403869. The next prime is 66310403893. The reversal of 66310403882 is 28830401366.

It is a happy number.

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., 59682978601 + 6627425281 = 244301^2 + 81409^2 .

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 as a sum of consecutive naturals, namely, 16577600969 + ... + 16577600972.

Almost surely, 2^66310403882 is an apocalyptic number.

66310403882 is a deficient number, since it is larger than the sum of its proper divisors (33155201944).

66310403882 is a wasteful number, since it uses less digits than its factorization.

66310403882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33155201943.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 66310403882 in words is "sixty-six billion, three hundred ten million, four hundred three thousand, eight hundred eighty-two".