51438643826156 has 12 divisors (see below), whose sum is σ = 90019711849368. Its totient is φ = 25718726154912.

The previous prime is 51438643826147. The next prime is 51438643826233. The reversal of 51438643826156 is 65162834683415.

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, 148745246 + ... + 149090661.

It is an arithmetic number, because the mean of its divisors is an integer number (7501642654114).

Almost surely, 2^{51438643826156} is an apocalyptic number.

It is an amenable number.

51438643826156 is a deficient number, since it is larger than the sum of its proper divisors (38581068023212).

51438643826156 is a wasteful number, since it uses less digits than its factorization.

51438643826156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297879088 (or 297879086 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 62.

The spelling of 51438643826156 in words is "fifty-one trillion, four hundred thirty-eight billion, six hundred forty-three million, eight hundred twenty-six thousand, one hundred fifty-six".