51234203512 has 16 divisors (see below), whose sum is σ = 97143505200. Its totient is φ = 25329268800.

The previous prime is 51234203477. The next prime is 51234203549. The reversal of 51234203512 is 21530243215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35978364 + ... + 35979787.

It is an arithmetic number, because the mean of its divisors is an integer number (6071469075).

Almost surely, 2^51234203512 is an apocalyptic number.

It is an amenable number.

51234203512 is a deficient number, since it is larger than the sum of its proper divisors (45909301688).

51234203512 is a wasteful number, since it uses less digits than its factorization.

51234203512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71958246 (or 71958242 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 51234203512 its reverse (21530243215), we get a palindrome (72764446727).

The spelling of 51234203512 in words is "fifty-one billion, two hundred thirty-four million, two hundred three thousand, five hundred twelve".