51831128653 has 8 divisors (see below), whose sum is σ = 52555370688. Its totient is φ = 51107271264.

The previous prime is 51831128651. The next prime is 51831128663. The reversal of 51831128653 is 35682113815.

It is a happy number.

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 51831128653 - 2¹ = 51831128651 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 (51831128651) 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, 180750 + ... + 369232.

It is an arithmetic number, because the mean of its divisors is an integer number (6569421336).

Almost surely, 2^51831128653 is an apocalyptic number.

It is an amenable number.

51831128653 is a deficient number, since it is larger than the sum of its proper divisors (724242035).

51831128653 is a wasteful number, since it uses less digits than its factorization.

51831128653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192323.

The product of its digits is 172800, while the sum is 43.

The spelling of 51831128653 in words is "fifty-one billion, eight hundred thirty-one million, one hundred twenty-eight thousand, six hundred fifty-three".