611553216066 has 32 divisors (see below), whose sum is σ = 1317274176960. Its totient is φ = 188158415424.

The previous prime is 611553216041. The next prime is 611553216067. The reversal of 611553216066 is 660612355116.

It is not an unprimeable number, because it can be changed into a prime (611553216067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048765 + ... + 1524143.

It is an arithmetic number, because the mean of its divisors is an integer number (41164818030).

Almost surely, 2^611553216066 is an apocalyptic number.

611553216066 is an abundant number, since it is smaller than the sum of its proper divisors (705720960894).

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

611553216066 is a wasteful number, since it uses less digits than its factorization.

611553216066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491890.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 611553216066 in words is "six hundred eleven billion, five hundred fifty-three million, two hundred sixteen thousand, sixty-six".