51210144306655 has 8 divisors (see below), whose sum is σ = 61452307678752. Its totient is φ = 40968025771488.

The previous prime is 51210144306637. The next prime is 51210144306691. The reversal of 51210144306655 is 55660344101215.

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 51210144306655 - 2⁹ = 51210144306143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8643112 + ... + 13308781.

It is an arithmetic number, because the mean of its divisors is an integer number (7681538459844).

Almost surely, 2^{51210144306655} is an apocalyptic number.

51210144306655 is a deficient number, since it is larger than the sum of its proper divisors (10242163372097).

51210144306655 is a wasteful number, since it uses less digits than its factorization.

51210144306655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22418465.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 51210144306655 in words is "fifty-one trillion, two hundred ten billion, one hundred forty-four million, three hundred six thousand, six hundred fifty-five".