51130207212 has 48 divisors (see below), whose sum is σ = 136358272512. Its totient is φ = 14607446400.

The previous prime is 51130207211. The next prime is 51130207231. The reversal of 51130207212 is 21270203115.

It is a super-2 number, since 2×51130207212² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51130207211) 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, 2049888 + ... + 2074680.

It is an arithmetic number, because the mean of its divisors is an integer number (2840797344).

Almost surely, 2^51130207212 is an apocalyptic number.

It is an amenable number.

51130207212 is an abundant number, since it is smaller than the sum of its proper divisors (85228065300).

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

51130207212 is a wasteful number, since it uses less digits than its factorization.

51130207212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49358 (or 49356 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The spelling of 51130207212 in words is "fifty-one billion, one hundred thirty million, two hundred seven thousand, two hundred twelve".