6216165566701 has 4 divisors (see below), whose sum is σ = 6216206819004. Its totient is φ = 6216124314400.

The previous prime is 6216165566671. The next prime is 6216165566729. The reversal of 6216165566701 is 1076655616126.

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 1238826876676 + 4977338690025 = 1113026^2 + 2230995^2 .

It is a cyclic number.

It is not a de Polignac number, because 6216165566701 - 2⁹ = 6216165566189 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 (6216165566761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20399290 + ... + 20701771.

It is an arithmetic number, because the mean of its divisors is an integer number (1554051704751).

Almost surely, 2^{6216165566701} is an apocalyptic number.

It is an amenable number.

6216165566701 is a deficient number, since it is larger than the sum of its proper divisors (41252303).

6216165566701 is a wasteful number, since it uses less digits than its factorization.

6216165566701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41252302.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 6216165566701 in words is "six trillion, two hundred sixteen billion, one hundred sixty-five million, five hundred sixty-six thousand, seven hundred one".