66061002104 has 32 divisors (see below), whose sum is σ = 125552488320. Its totient is φ = 32581582176.

The previous prime is 66061002071. The next prime is 66061002113. The reversal of 66061002104 is 40120016066.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349589 + ... + 504315.

It is an arithmetic number, because the mean of its divisors is an integer number (3923515260).

Almost surely, 2^66061002104 is an apocalyptic number.

It is an amenable number.

66061002104 is a deficient number, since it is larger than the sum of its proper divisors (59491486216).

66061002104 is a wasteful number, since it uses less digits than its factorization.

66061002104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155459 (or 155455 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 66061002104 in words is "sixty-six billion, sixty-one million, two thousand, one hundred four".