5214257066561 has 8 divisors (see below), whose sum is σ = 5220676637064. Its totient is φ = 5207841239040.

The previous prime is 5214257066423. The next prime is 5214257066581. The reversal of 5214257066561 is 1656607524125.

It can be written as a sum of positive squares in 4 ways, for example, as 337915503025 + 4876341563536 = 581305^2 + 2208244^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5214257066561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5214257066581) 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 7 ways as a sum of consecutive naturals, for example, 1857245 + ... + 3725301.

It is an arithmetic number, because the mean of its divisors is an integer number (652584579633).

Almost surely, 2^{5214257066561} is an apocalyptic number.

It is an amenable number.

5214257066561 is a deficient number, since it is larger than the sum of its proper divisors (6419570503).

5214257066561 is a wasteful number, since it uses less digits than its factorization.

5214257066561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871491.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 5214257066561 in words is "five trillion, two hundred fourteen billion, two hundred fifty-seven million, sixty-six thousand, five hundred sixty-one".