61004574644 has 24 divisors (see below), whose sum is σ = 115376442720. Its totient is φ = 28056459744.

The previous prime is 61004574643. The next prime is 61004574661. The reversal of 61004574644 is 44647540016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61004574643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058014 + ... + 2087445.

It is an arithmetic number, because the mean of its divisors is an integer number (4807351780).

Almost surely, 2^61004574644 is an apocalyptic number.

It is an amenable number.

61004574644 is a deficient number, since it is larger than the sum of its proper divisors (54371868076).

61004574644 is a wasteful number, since it uses less digits than its factorization.

61004574644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145759 (or 4145757 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 61004574644 in words is "sixty-one billion, four million, five hundred seventy-four thousand, six hundred forty-four".