6170721622213 has 4 divisors (see below), whose sum is σ = 6255252055468. Its totient is φ = 6086191188960.

The previous prime is 6170721622211. The next prime is 6170721622249. The reversal of 6170721622213 is 3122261270716.

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 3910083076449 + 2260638545764 = 1977393^2 + 1503542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6170721622213 - 2¹ = 6170721622211 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 (6170721622211) 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, 42265216518 + ... + 42265216663.

It is an arithmetic number, because the mean of its divisors is an integer number (1563813013867).

Almost surely, 2^{6170721622213} is an apocalyptic number.

It is an amenable number.

6170721622213 is a deficient number, since it is larger than the sum of its proper divisors (84530433255).

6170721622213 is an equidigital number, since it uses as much as digits as its factorization.

6170721622213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84530433254.

The product of its (nonzero) digits is 84672, while the sum is 40.

Adding to 6170721622213 its reverse (3122261270716), we get a palindrome (9292982892929).

The spelling of 6170721622213 in words is "six trillion, one hundred seventy billion, seven hundred twenty-one million, six hundred twenty-two thousand, two hundred thirteen".