1666652702760 has 512 divisors, whose sum is σ = 5924839219200. Its totient is φ = 415285678080.

The previous prime is 1666652702753. The next prime is 1666652702831. The reversal of 1666652702760 is 672072566661.

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

It is a junction number, because it is equal to n+sod(n) for n = 1666652702697 and 1666652702706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2641287645 + ... + 2641288275.

It is an arithmetic number, because the mean of its divisors is an integer number (11571951600).

Almost surely, 2^{1666652702760} is an apocalyptic number.

1666652702760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666652702760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2962419609600).

1666652702760 is an abundant number, since it is smaller than the sum of its proper divisors (4258186516440).

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

1666652702760 is a wasteful number, since it uses less digits than its factorization.

1666652702760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 1666652702760 in words is "one trillion, six hundred sixty-six billion, six hundred fifty-two million, seven hundred two thousand, seven hundred sixty".