51012016212 has 48 divisors (see below), whose sum is σ = 126498335040. Its totient is φ = 15944259072.

The previous prime is 51012016199. The next prime is 51012016219. The reversal of 51012016212 is 21261021015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012016219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409918 + ... + 519669.

It is an arithmetic number, because the mean of its divisors is an integer number (2635381980).

Almost surely, 2^51012016212 is an apocalyptic number.

It is an amenable number.

51012016212 is an abundant number, since it is smaller than the sum of its proper divisors (75486318828).

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

51012016212 is a wasteful number, since it uses less digits than its factorization.

51012016212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929880 (or 929878 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 51012016212 its reverse (21261021015), we get a palindrome (72273037227).

The spelling of 51012016212 in words is "fifty-one billion, twelve million, sixteen thousand, two hundred twelve".