1659845133864 has 48 divisors (see below), whose sum is σ = 4591061017920. Its totient is φ = 541509758880.

The previous prime is 1659845133847. The next prime is 1659845133899. The reversal of 1659845133864 is 4683315489561.

It is a happy number.

1659845133864 is a `hidden beast` number, since 1 + 6 + 5 + 9 + 84 + 513 + 38 + 6 + 4 = 666.

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 11 ways as a sum of consecutive naturals, for example, 245245602 + ... + 245252369.

It is an arithmetic number, because the mean of its divisors is an integer number (95647104540).

Almost surely, 2^{1659845133864} is an apocalyptic number.

It is an amenable number.

1659845133864 is an abundant number, since it is smaller than the sum of its proper divisors (2931215884056).

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

1659845133864 is a wasteful number, since it uses less digits than its factorization.

1659845133864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490498030 (or 490498023 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 1659845133864 in words is "one trillion, six hundred fifty-nine billion, eight hundred forty-five million, one hundred thirty-three thousand, eight hundred sixty-four".