53124256666 has 12 divisors (see below), whose sum is σ = 86287624542. Its totient is φ = 24518887536.

The previous prime is 53124256663. The next prime is 53124256697. The reversal of 53124256666 is 66665242135.

It can be written as a sum of positive squares in 3 ways, for example, as 25158718225 + 27965538441 = 158615^2 + 167229^2 .

It is not an unprimeable number, because it can be changed into a prime (53124256663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78585841 + ... + 78586516.

Almost surely, 2^53124256666 is an apocalyptic number.

53124256666 is a deficient number, since it is larger than the sum of its proper divisors (33163367876).

53124256666 is a wasteful number, since it uses less digits than its factorization.

53124256666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157172385 (or 157172372 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 46.

The spelling of 53124256666 in words is "fifty-three billion, one hundred twenty-four million, two hundred fifty-six thousand, six hundred sixty-six".