51103353012 has 12 divisors (see below), whose sum is σ = 119241157056. Its totient is φ = 17034451000.

The previous prime is 51103352939. The next prime is 51103353043. The reversal of 51103353012 is 21035330115.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51103353012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129306364 + ... + 2129306387.

It is an arithmetic number, because the mean of its divisors is an integer number (9936763088).

Almost surely, 2^51103353012 is an apocalyptic number.

It is an amenable number.

51103353012 is an abundant number, since it is smaller than the sum of its proper divisors (68137804044).

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

51103353012 is a wasteful number, since it uses less digits than its factorization.

51103353012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258612758 (or 4258612756 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 51103353012 its reverse (21035330115), we get a palindrome (72138683127).

The spelling of 51103353012 in words is "fifty-one billion, one hundred three million, three hundred fifty-three thousand, twelve".