51661650150025 has 24 divisors (see below), whose sum is σ = 66905959440960. Its totient is φ = 39496745787840.

The previous prime is 51661650149959. The next prime is 51661650150073. The reversal of 51661650150025 is 52005105616615.

51661650150025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51661650150025 - 2⁷ = 51661650149897 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39870147 + ... + 41145496.

It is an arithmetic number, because the mean of its divisors is an integer number (2787748310040).

Almost surely, 2^{51661650150025} is an apocalyptic number.

It is an amenable number.

51661650150025 is a deficient number, since it is larger than the sum of its proper divisors (15244309290935).

51661650150025 is a wasteful number, since it uses less digits than its factorization.

51661650150025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81016785 (or 81016780 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 51661650150025 in words is "fifty-one trillion, six hundred sixty-one billion, six hundred fifty million, one hundred fifty thousand, twenty-five".