1660716288000 has 3456 divisors, whose sum is σ = 8058576314880. Its totient is φ = 321159168000.

The previous prime is 1660716287983. The next prime is 1660716288059. The reversal of 1660716288000 is 8826170661.

It is a happy number.

1660716288000 is a `hidden beast` number, since 1 + 6 + 607 + 16 + 28 + 8 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 44884223982 + ... + 44884224018.

It is an arithmetic number, because the mean of its divisors is an integer number (2331763980).

Almost surely, 2^{1660716288000} is an apocalyptic number.

1660716288000 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 1660716288000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4029288157440).

1660716288000 is an abundant number, since it is smaller than the sum of its proper divisors (6397860026880).

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

1660716288000 is a wasteful number, since it uses less digits than its factorization.

1660716288000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 1660716288000 in words is "one trillion, six hundred sixty billion, seven hundred sixteen million, two hundred eighty-eight thousand".