1660434653682 has 64 divisors (see below), whose sum is σ = 4217213088000. Its totient is φ = 474383329920.

The previous prime is 1660434653609. The next prime is 1660434653687. The reversal of 1660434653682 is 2863564340661.

1660434653682 is a `hidden beast` number, since 1 + 6 + 60 + 4 + 3 + 46 + 536 + 8 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1660434653687) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7212694 + ... + 7439342.

It is an arithmetic number, because the mean of its divisors is an integer number (65893954500).

Almost surely, 2^{1660434653682} is an apocalyptic number.

1660434653682 is an abundant number, since it is smaller than the sum of its proper divisors (2556778434318).

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

1660434653682 is a wasteful number, since it uses less digits than its factorization.

1660434653682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246048 (or 246042 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 1660434653682 in words is "one trillion, six hundred sixty billion, four hundred thirty-four million, six hundred fifty-three thousand, six hundred eighty-two".