51030646655 has 8 divisors (see below), whose sum is σ = 61239372432. Its totient is φ = 40822786368.

The previous prime is 51030646637. The next prime is 51030646657. The reversal of 51030646655 is 55664603015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51030646655 - 2⁶ = 51030646591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030646657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78689 + ... + 329018.

It is an arithmetic number, because the mean of its divisors is an integer number (7654921554).

Almost surely, 2^51030646655 is an apocalyptic number.

51030646655 is a deficient number, since it is larger than the sum of its proper divisors (10208725777).

51030646655 is a wasteful number, since it uses less digits than its factorization.

51030646655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432745.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 51030646655 in words is "fifty-one billion, thirty million, six hundred forty-six thousand, six hundred fifty-five".