51104540502 has 96 divisors (see below), whose sum is σ = 117301766400. Its totient is φ = 16035153984.

The previous prime is 51104540471. The next prime is 51104540507. The reversal of 51104540502 is 20504540115.

51104540502 is a `hidden beast` number, since 5 + 1 + 104 + 54 + 0 + 502 = 666.

It is a super-2 number, since 2×51104540502² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51104540507) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 55608399 + ... + 55609317.

It is an arithmetic number, because the mean of its divisors is an integer number (1221893400).

Almost surely, 2^51104540502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51104540502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58650883200).

51104540502 is an abundant number, since it is smaller than the sum of its proper divisors (66197225898).

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

51104540502 is a wasteful number, since it uses less digits than its factorization.

51104540502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 51104540502 in words is "fifty-one billion, one hundred four million, five hundred forty thousand, five hundred two".