5211254040985 has 4 divisors (see below), whose sum is σ = 6253504849188. Its totient is φ = 4169003232784.

The previous prime is 5211254040947. The next prime is 5211254040989. The reversal of 5211254040985 is 5890404521125.

It is a happy number.

5211254040985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3385382883481 + 1825871157504 = 1839941^2 + 1351248^2 .

It is a cyclic number.

It is not a de Polignac number, because 5211254040985 - 2⁷ = 5211254040857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5211254040989) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 521125404094 + ... + 521125404103.

It is an arithmetic number, because the mean of its divisors is an integer number (1563376212297).

Almost surely, 2^{5211254040985} is an apocalyptic number.

It is an amenable number.

5211254040985 is a deficient number, since it is larger than the sum of its proper divisors (1042250808203).

5211254040985 is a wasteful number, since it uses less digits than its factorization.

5211254040985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042250808202.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 5211254040985 in words is "five trillion, two hundred eleven billion, two hundred fifty-four million, forty thousand, nine hundred eighty-five".