51551024312 has 64 divisors (see below), whose sum is σ = 100958400000. Its totient is φ = 24647011200.

The previous prime is 51551024297. The next prime is 51551024347. The reversal of 51551024312 is 21342015515.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12574439 + ... + 12578537.

It is an arithmetic number, because the mean of its divisors is an integer number (1577475000).

Almost surely, 2^51551024312 is an apocalyptic number.

It is an amenable number.

51551024312 is a deficient number, since it is larger than the sum of its proper divisors (49407375688).

51551024312 is a wasteful number, since it uses less digits than its factorization.

51551024312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644 (or 4640 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 51551024312 its reverse (21342015515), we get a palindrome (72893039827).

The spelling of 51551024312 in words is "fifty-one billion, five hundred fifty-one million, twenty-four thousand, three hundred twelve".