51665225051012 has 12 divisors (see below), whose sum is σ = 90414248527680. Its totient is φ = 25832582614536.

The previous prime is 51665225051009. The next prime is 51665225051017. The reversal of 51665225051012 is 21015052256615.

It is not an unprimeable number, because it can be changed into a prime (51665225051017) 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, 3336488 + ... + 10698719.

It is an arithmetic number, because the mean of its divisors is an integer number (7534520710640).

Almost surely, 2^{51665225051012} is an apocalyptic number.

It is an amenable number.

51665225051012 is a deficient number, since it is larger than the sum of its proper divisors (38749023476668).

51665225051012 is a wasteful number, since it uses less digits than its factorization.

51665225051012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14955490 (or 14955488 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 51665225051012 in words is "fifty-one trillion, six hundred sixty-five billion, two hundred twenty-five million, fifty-one thousand, twelve".