51101050055508 has 36 divisors (see below), whose sum is σ = 129674713945140. Its totient is φ = 16967404425216.

The previous prime is 51101050055479. The next prime is 51101050055509. The reversal of 51101050055508 is 80555005010115.

It is a happy number.

51101050055508 is a `hidden beast` number, since 51 + 1 + 0 + 1 + 0 + 50 + 0 + 5 + 550 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24295455037764 + 26805595017744 = 4929042^2 + 5177412^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×51101050055508² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101050055509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2761612563 + ... + 2761631066.

It is an arithmetic number, because the mean of its divisors is an integer number (3602075387365).

Almost surely, 2^{51101050055508} is an apocalyptic number.

It is an amenable number.

51101050055508 is an abundant number, since it is smaller than the sum of its proper divisors (78573663889632).

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

51101050055508 is a wasteful number, since it uses less digits than its factorization.

51101050055508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523243896 (or 5523243891 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 36.

The spelling of 51101050055508 in words is "fifty-one trillion, one hundred one billion, fifty million, fifty-five thousand, five hundred eight".