61649308908304 has 80 divisors (see below), whose sum is σ = 128970595353600. Its totient is φ = 28379054638080.

The previous prime is 61649308908221. The next prime is 61649308908349. The reversal of 61649308908304 is 40380980394616.

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 15 ways as a sum of consecutive naturals, for example, 204903772 + ... + 205204420.

It is an arithmetic number, because the mean of its divisors is an integer number (1612132441920).

Almost surely, 2^{61649308908304} is an apocalyptic number.

It is an amenable number.

61649308908304 is an abundant number, since it is smaller than the sum of its proper divisors (67321286445296).

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

61649308908304 is a wasteful number, since it uses less digits than its factorization.

61649308908304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303248 (or 303242 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 61649308908304 in words is "sixty-one trillion, six hundred forty-nine billion, three hundred eight million, nine hundred eight thousand, three hundred four".