1066855905572 has 12 divisors (see below), whose sum is σ = 1878177463680. Its totient is φ = 530233773096.

The previous prime is 1066855905559. The next prime is 1066855905581. The reversal of 1066855905572 is 2755095586601.

It is a super-2 number, since 2×1066855905572² (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 3 ways as a sum of consecutive naturals, for example, 798544172 + ... + 798545507.

It is an arithmetic number, because the mean of its divisors is an integer number (156514788640).

Almost surely, 2^{1066855905572} is an apocalyptic number.

It is an amenable number.

1066855905572 is a deficient number, since it is larger than the sum of its proper divisors (811321558108).

1066855905572 is a wasteful number, since it uses less digits than its factorization.

1066855905572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597089850 (or 1597089848 counting only the distinct ones).

The product of its (nonzero) digits is 22680000, while the sum is 59.

The spelling of 1066855905572 in words is "one trillion, sixty-six billion, eight hundred fifty-five million, nine hundred five thousand, five hundred seventy-two".