51936020212 has 36 divisors (see below), whose sum is σ = 95964580740. Its totient is φ = 24590708352.

The previous prime is 51936020197. The next prime is 51936020219. The reversal of 51936020212 is 21202063915.

It can be written as a sum of positive squares in 2 ways, for example, as 17871411856 + 34064608356 = 133684^2 + 184566^2 .

It is a super-2 number, since 2×51936020212² (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 (51936020219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4119214 + ... + 4131802.

Almost surely, 2^51936020212 is an apocalyptic number.

It is an amenable number.

51936020212 is a deficient number, since it is larger than the sum of its proper divisors (44028560528).

51936020212 is a wasteful number, since it uses less digits than its factorization.

51936020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15488 (or 15467 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 51936020212 in words is "fifty-one billion, nine hundred thirty-six million, twenty thousand, two hundred twelve".