51210535005 has 48 divisors (see below), whose sum is σ = 101462125440. Its totient is φ = 23406724224.

The previous prime is 51210535003. The next prime is 51210535007. The reversal of 51210535005 is 50053501215.

51210535005 is a `hidden beast` number, since 5 + 121 + 0 + 535 + 0 + 0 + 5 = 666.

51210535005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51210535003) and next prime (51210535007).

It is not a de Polignac number, because 51210535005 - 2¹ = 51210535003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51210535005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51210535001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3059439 + ... + 3076131.

It is an arithmetic number, because the mean of its divisors is an integer number (2113794280).

Almost surely, 2^51210535005 is an apocalyptic number.

It is an amenable number.

51210535005 is a deficient number, since it is larger than the sum of its proper divisors (50251590435).

51210535005 is a wasteful number, since it uses less digits than its factorization.

51210535005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26450 (or 26447 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 51210535005 in words is "fifty-one billion, two hundred ten million, five hundred thirty-five thousand, five".