5351210666 has 16 divisors (see below), whose sum is σ = 8501672520. Its totient is φ = 2517419520.

The previous prime is 5351210663. The next prime is 5351210681. The reversal of 5351210666 is 6660121535.

It can be written as a sum of positive squares in 4 ways, for example, as 5252625625 + 98585041 = 72475^2 + 9929^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5351210663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92006 + ... + 138446.

Almost surely, 2^5351210666 is an apocalyptic number.

5351210666 is a deficient number, since it is larger than the sum of its proper divisors (3150461854).

5351210666 is a wasteful number, since it uses less digits than its factorization.

5351210666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49849.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 5351210666 is about 73151.9696658948. The cubic root of 5351210666 is about 1749.1109133833.

The spelling of 5351210666 in words is "five billion, three hundred fifty-one million, two hundred ten thousand, six hundred sixty-six".