66055005572 has 24 divisors (see below), whose sum is σ = 120631221312. Its totient is φ = 31589157600.

The previous prime is 66055005563. The next prime is 66055005589. The reversal of 66055005572 is 27550055066.

66055005572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66055005572² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245922 + ... + 2275142.

It is an arithmetic number, because the mean of its divisors is an integer number (5026300888).

Almost surely, 2^66055005572 is an apocalyptic number.

It is an amenable number.

66055005572 is a deficient number, since it is larger than the sum of its proper divisors (54576215740).

66055005572 is a wasteful number, since it uses less digits than its factorization.

66055005572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53819 (or 53817 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 41.

The spelling of 66055005572 in words is "sixty-six billion, fifty-five million, five thousand, five hundred seventy-two".