61486647255 has 24 divisors (see below), whose sum is σ = 116265661200. Its totient is φ = 29811707520.

The previous prime is 61486647197. The next prime is 61486647263. The reversal of 61486647255 is 55274668416.

61486647255 is a `hidden beast` number, since 61 + 4 + 8 + 66 + 472 + 55 = 666.

It is not a de Polignac number, because 61486647255 - 2⁶ = 61486647191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62107230 + ... + 62108219.

It is an arithmetic number, because the mean of its divisors is an integer number (4844402550).

Almost surely, 2^61486647255 is an apocalyptic number.

61486647255 is a deficient number, since it is larger than the sum of its proper divisors (54779013945).

61486647255 is a wasteful number, since it uses less digits than its factorization.

61486647255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124215471 (or 124215468 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 61486647255 in words is "sixty-one billion, four hundred eighty-six million, six hundred forty-seven thousand, two hundred fifty-five".