5211561706511 has 8 divisors (see below), whose sum is σ = 5260484628864. Its totient is φ = 5162642798040.

The previous prime is 5211561706451. The next prime is 5211561706541. The reversal of 5211561706511 is 1156071651125.

5211561706511 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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-5211561706511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211561706541) 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, 1637966 + ... + 3620228.

It is an arithmetic number, because the mean of its divisors is an integer number (657560578608).

Almost surely, 2^{5211561706511} is an apocalyptic number.

5211561706511 is a deficient number, since it is larger than the sum of its proper divisors (48922922353).

5211561706511 is a wasteful number, since it uses less digits than its factorization.

5211561706511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006941.

The product of its (nonzero) digits is 63000, while the sum is 41.

The spelling of 5211561706511 in words is "five trillion, two hundred eleven billion, five hundred sixty-one million, seven hundred six thousand, five hundred eleven".