51064253212 has 24 divisors (see below), whose sum is σ = 102135587456. Its totient is φ = 21883162608.

The previous prime is 51064253209. The next prime is 51064253213. The reversal of 51064253212 is 21235246015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51064253213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409963 + ... + 519805.

Almost surely, 2^51064253212 is an apocalyptic number.

It is an amenable number.

51064253212 is an abundant number, since it is smaller than the sum of its proper divisors (51071334244).

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

51064253212 is a wasteful number, since it uses less digits than its factorization.

51064253212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126457 (or 126455 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 51064253212 its reverse (21235246015), we get a palindrome (72299499227).

The spelling of 51064253212 in words is "fifty-one billion, sixty-four million, two hundred fifty-three thousand, two hundred twelve".