51104204540 has 24 divisors (see below), whose sum is σ = 107326296000. Its totient is φ = 20440259648.

The previous prime is 51104204519. The next prime is 51104204609. The reversal of 51104204540 is 4540240115.

It is a super-2 number, since 2×51104204540² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234461 + ... + 396459.

It is an arithmetic number, because the mean of its divisors is an integer number (4471929000).

Almost surely, 2^51104204540 is an apocalyptic number.

It is an amenable number.

51104204540 is an abundant number, since it is smaller than the sum of its proper divisors (56222091460).

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

51104204540 is a wasteful number, since it uses less digits than its factorization.

51104204540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177781 (or 177779 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 51104204540 its reverse (4540240115), we get a palindrome (55644444655).

The spelling of 51104204540 in words is "fifty-one billion, one hundred four million, two hundred four thousand, five hundred forty".