66419682802 has 16 divisors (see below), whose sum is σ = 108729957024. Its totient is φ = 30178764000.

The previous prime is 66419682761. The next prime is 66419682809. The reversal of 66419682802 is 20828691466.

It is a self number, because there is not a number n which added to its sum of digits gives 66419682802.

It is not an unprimeable number, because it can be changed into a prime (66419682809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543324 + ... + 654247.

It is an arithmetic number, because the mean of its divisors is an integer number (6795622314).

Almost surely, 2^66419682802 is an apocalyptic number.

66419682802 is a deficient number, since it is larger than the sum of its proper divisors (42310274222).

66419682802 is a wasteful number, since it uses less digits than its factorization.

66419682802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200105.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 66419682802 in words is "sixty-six billion, four hundred nineteen million, six hundred eighty-two thousand, eight hundred two".