1665250292160 has 2688 divisors, whose sum is σ = 7668670464000. Its totient is φ = 329042165760.

The previous prime is 1665250292089. The next prime is 1665250292203. The reversal of 1665250292160 is 612920525661.

1665250292160 is a `hidden beast` number, since 1 + 6 + 6 + 52 + 502 + 92 + 1 + 6 + 0 = 666.

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

It is a congruent number.

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 383 ways as a sum of consecutive naturals, for example, 18710677396 + ... + 18710677484.

It is an arithmetic number, because the mean of its divisors is an integer number (2852928000).

Almost surely, 2^{1665250292160} is an apocalyptic number.

1665250292160 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 1665250292160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3834335232000).

1665250292160 is an abundant number, since it is smaller than the sum of its proper divisors (6003420171840).

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

1665250292160 is a wasteful number, since it uses less digits than its factorization.

1665250292160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 1665250292160 in words is "one trillion, six hundred sixty-five billion, two hundred fifty million, two hundred ninety-two thousand, one hundred sixty".