61463649555 has 192 divisors, whose sum is σ = 140628648960. Its totient is φ = 25181452800.

The previous prime is 61463649493. The next prime is 61463649589. The reversal of 61463649555 is 55594636416.

61463649555 is a `hidden beast` number, since 6 + 1 + 46 + 3 + 6 + 49 + 555 = 666.

It is not a de Polignac number, because 61463649555 - 2⁶ = 61463649491 is a prime.

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 191 ways as a sum of consecutive naturals, for example, 5160367 + ... + 5172263.

It is an arithmetic number, because the mean of its divisors is an integer number (732440880).

Almost surely, 2^61463649555 is an apocalyptic number.

61463649555 is an abundant number, since it is smaller than the sum of its proper divisors (79164999405).

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

61463649555 is a wasteful number, since it uses less digits than its factorization.

61463649555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12007 (or 11994 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The spelling of 61463649555 in words is "sixty-one billion, four hundred sixty-three million, six hundred forty-nine thousand, five hundred fifty-five".