51210553361 has 8 divisors (see below), whose sum is σ = 56241000000. Its totient is φ = 46242597040.

The previous prime is 51210553357. The next prime is 51210553369. The reversal of 51210553361 is 16335501215.

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 51210553361 - 2² = 51210553357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51210553369) 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, 15620861 + ... + 15624138.

It is an arithmetic number, because the mean of its divisors is an integer number (7030125000).

Almost surely, 2^51210553361 is an apocalyptic number.

It is an amenable number.

51210553361 is a deficient number, since it is larger than the sum of its proper divisors (5030446639).

51210553361 is a wasteful number, since it uses less digits than its factorization.

51210553361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31245159.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 51210553361 in words is "fifty-one billion, two hundred ten million, five hundred fifty-three thousand, three hundred sixty-one".