51077212012 has 24 divisors (see below), whose sum is σ = 90379210320. Its totient is φ = 25255004160.

The previous prime is 51077212003. The next prime is 51077212037. The reversal of 51077212012 is 21021277015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436212 + ... + 540772.

It is an arithmetic number, because the mean of its divisors is an integer number (3765800430).

Almost surely, 2^51077212012 is an apocalyptic number.

It is an amenable number.

51077212012 is a deficient number, since it is larger than the sum of its proper divisors (39301998308).

51077212012 is a wasteful number, since it uses less digits than its factorization.

51077212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105921 (or 105919 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 28.

Adding to 51077212012 its reverse (21021277015), we get a palindrome (72098489027).

The spelling of 51077212012 in words is "fifty-one billion, seventy-seven million, two hundred twelve thousand, twelve".