66284801886700 has 72 divisors (see below), whose sum is σ = 148486989974400. Its totient is φ = 25657071859200.

The previous prime is 66284801886629. The next prime is 66284801886727. The reversal of 66284801886700 is 768810848266.

It is a super-2 number, since 2×66284801886700² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50969754 + ... + 52254046.

It is an arithmetic number, because the mean of its divisors is an integer number (2062319305200).

Almost surely, 2^{66284801886700} is an apocalyptic number.

It is an amenable number.

66284801886700 is an abundant number, since it is smaller than the sum of its proper divisors (82202188087700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66284801886700 is a wasteful number, since it uses less digits than its factorization.

66284801886700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300987 (or 1300980 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 64.

The spelling of 66284801886700 in words is "sixty-six trillion, two hundred eighty-four billion, eight hundred one million, eight hundred eighty-six thousand, seven hundred".