51747954436 has 12 divisors (see below), whose sum is σ = 90563963728. Its totient is φ = 25872536232.

The previous prime is 51747954421. The next prime is 51747954437. The reversal of 51747954436 is 63445974715.

It is not an unprimeable number, because it can be changed into a prime (51747954437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277326 + ... + 424741.

Almost surely, 2^51747954436 is an apocalyptic number.

It is an amenable number.

51747954436 is a deficient number, since it is larger than the sum of its proper divisors (38816009292).

51747954436 is a wasteful number, since it uses less digits than its factorization.

51747954436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720498 (or 720496 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 55.

It can be divided in two parts, 517479 and 54436, that added together give a triangular number (571915 = T₁₀₆₉).

The spelling of 51747954436 in words is "fifty-one billion, seven hundred forty-seven million, nine hundred fifty-four thousand, four hundred thirty-six".