51210135468 has 24 divisors (see below), whose sum is σ = 132767018160. Its totient is φ = 17070045120.

The previous prime is 51210135461. The next prime is 51210135511. The reversal of 51210135468 is 86453101215.

51210135468 is a `hidden beast` number, since 5 + 1 + 2 + 101 + 3 + 546 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51210135461) 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, 237083853 + ... + 237084068.

It is an arithmetic number, because the mean of its divisors is an integer number (5531959090).

Almost surely, 2^51210135468 is an apocalyptic number.

It is an amenable number.

51210135468 is an abundant number, since it is smaller than the sum of its proper divisors (81556882692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51210135468 is a wasteful number, since it uses less digits than its factorization.

51210135468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474167934 (or 474167926 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 51210135468 in words is "fifty-one billion, two hundred ten million, one hundred thirty-five thousand, four hundred sixty-eight".