61649314539255 has 144 divisors (see below), whose sum is σ = 116014618193760. Its totient is φ = 30179551997952.

The previous prime is 61649314539247. The next prime is 61649314539259. The reversal of 61649314539255 is 55293541394616.

It is a happy number.

61649314539255 is a `hidden beast` number, since 6 + 1 + 6 + 4 + 93 + 1 + 4 + 539 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 61649314539255 - 2³ = 61649314539247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61649314539192 and 61649314539201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61649314539259) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 932112547 + ... + 932178683.

It is an arithmetic number, because the mean of its divisors is an integer number (805657070790).

Almost surely, 2^{61649314539255} is an apocalyptic number.

61649314539255 is a deficient number, since it is larger than the sum of its proper divisors (54365303654505).

61649314539255 is a wasteful number, since it uses less digits than its factorization.

61649314539255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66910 (or 66864 counting only the distinct ones).

The product of its digits is 104976000, while the sum is 63.

The spelling of 61649314539255 in words is "sixty-one trillion, six hundred forty-nine billion, three hundred fourteen million, five hundred thirty-nine thousand, two hundred fifty-five".