61617944885452 has 48 divisors (see below), whose sum is σ = 112405402216800. Its totient is φ = 29518431022080.

The previous prime is 61617944885401. The next prime is 61617944885521. The reversal of 61617944885452 is 25458844971616.

61617944885452 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 2×61617944885452² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539537668 + ... + 539651860.

It is an arithmetic number, because the mean of its divisors is an integer number (2341779212850).

Almost surely, 2^{61617944885452} is an apocalyptic number.

It is an amenable number.

61617944885452 is a deficient number, since it is larger than the sum of its proper divisors (50787457331348).

61617944885452 is a wasteful number, since it uses less digits than its factorization.

61617944885452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149866 (or 149864 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 70.

The spelling of 61617944885452 in words is "sixty-one trillion, six hundred seventeen billion, nine hundred forty-four million, eight hundred eighty-five thousand, four hundred fifty-two".