1866466696320 has 1280 divisors, whose sum is σ = 7256859033600. Its totient is φ = 455619354624.

The previous prime is 1866466696307. The next prime is 1866466696331. The reversal of 1866466696320 is 236966646681.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5378866387 + ... + 5378866733.

It is an arithmetic number, because the mean of its divisors is an integer number (5669421120).

Almost surely, 2^{1866466696320} is an apocalyptic number.

1866466696320 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 1866466696320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3628429516800).

1866466696320 is an abundant number, since it is smaller than the sum of its proper divisors (5390392337280).

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

1866466696320 is a wasteful number, since it uses less digits than its factorization.

1866466696320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 63.

The spelling of 1866466696320 in words is "one trillion, eight hundred sixty-six billion, four hundred sixty-six million, six hundred ninety-six thousand, three hundred twenty".