51375146663018 has 8 divisors (see below), whose sum is σ = 77063217148548. Its totient is φ = 25687407613504.

The previous prime is 51375146662999. The next prime is 51375146663033. The reversal of 51375146663018 is 81036664157315.

It can be written as a sum of positive squares in 2 ways, for example, as 46408207895449 + 4966938767569 = 6812357^2 + 2228663^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82471121 + ... + 83091732.

Almost surely, 2^{51375146663018} is an apocalyptic number.

51375146663018 is a deficient number, since it is larger than the sum of its proper divisors (25688070485530).

51375146663018 is a wasteful number, since it uses less digits than its factorization.

51375146663018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165718008.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 51375146663018 in words is "fifty-one trillion, three hundred seventy-five billion, one hundred forty-six million, six hundred sixty-three thousand, eighteen".