52126066665 has 48 divisors (see below), whose sum is σ = 91859721408. Its totient is φ = 27338053248.

The previous prime is 52126066661. The next prime is 52126066673. The reversal of 52126066665 is 56666062125.

It is a happy number.

It is not a de Polignac number, because 52126066665 - 2² = 52126066661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 52126066665.

It is not an unprimeable number, because it can be changed into a prime (52126066661) 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 47 ways as a sum of consecutive naturals, for example, 1755079 + ... + 1784531.

It is an arithmetic number, because the mean of its divisors is an integer number (1913744196).

Almost surely, 2^52126066665 is an apocalyptic number.

It is an amenable number.

52126066665 is a deficient number, since it is larger than the sum of its proper divisors (39733654743).

52126066665 is a wasteful number, since it uses less digits than its factorization.

52126066665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30118 (or 30115 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 52126066665 in words is "fifty-two billion, one hundred twenty-six million, sixty-six thousand, six hundred sixty-five".