51911653330 has 8 divisors (see below), whose sum is σ = 93440976012. Its totient is φ = 20764661328.

The previous prime is 51911653327. The next prime is 51911653331. The reversal of 51911653330 is 3335611915.

It can be written as a sum of positive squares in 2 ways, for example, as 50470767649 + 1440885681 = 224657^2 + 37959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51911653330.

It is not an unprimeable number, because it can be changed into a prime (51911653331) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2595582657 + ... + 2595582676.

Almost surely, 2^51911653330 is an apocalyptic number.

51911653330 is a deficient number, since it is larger than the sum of its proper divisors (41529322682).

51911653330 is a wasteful number, since it uses less digits than its factorization.

51911653330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191165340.

The product of its (nonzero) digits is 36450, while the sum is 37.

The spelling of 51911653330 in words is "fifty-one billion, nine hundred eleven million, six hundred fifty-three thousand, three hundred thirty".