61488581561560 has 16 divisors (see below), whose sum is σ = 138349308513600. Its totient is φ = 24595432624608.

The previous prime is 61488581561509. The next prime is 61488581561581. The reversal of 61488581561560 is 6516518588416.

It is a junction number, because it is equal to n+sod(n) for n = 61488581561492 and 61488581561501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768607269480 + ... + 768607269559.

It is an arithmetic number, because the mean of its divisors is an integer number (8646831782100).

Almost surely, 2^{61488581561560} is an apocalyptic number.

It is an amenable number.

61488581561560 is an abundant number, since it is smaller than the sum of its proper divisors (76860726952040).

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

61488581561560 is a wasteful number, since it uses less digits than its factorization.

61488581561560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537214539050 (or 1537214539046 counting only the distinct ones).

The product of its (nonzero) digits is 55296000, while the sum is 64.

The spelling of 61488581561560 in words is "sixty-one trillion, four hundred eighty-eight billion, five hundred eighty-one million, five hundred sixty-one thousand, five hundred sixty".