1066842193920 has 368 divisors, whose sum is σ = 3530462696448. Its totient is φ = 274810798080.

The previous prime is 1066842193919. The next prime is 1066842193943. The reversal of 1066842193920 is 293912486601.

It is a super-2 number, since 2×1066842193920² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950351087 + ... + 1950351633.

Almost surely, 2^{1066842193920} is an apocalyptic number.

1066842193920 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 1066842193920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765231348224).

1066842193920 is an abundant number, since it is smaller than the sum of its proper divisors (2463620502528).

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

1066842193920 is an frugal number, since it uses more digits than its factorization.

1066842193920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 1066842193920 in words is "one trillion, sixty-six billion, eight hundred forty-two million, one hundred ninety-three thousand, nine hundred twenty".