6715255220213 has 4 divisors (see below), whose sum is σ = 6776863066380. Its totient is φ = 6653647374048.

The previous prime is 6715255220183. The next prime is 6715255220227. The reversal of 6715255220213 is 3120225525176.

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 3622996275889 + 3092258944324 = 1903417^2 + 1758482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6715255220213 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 (6714255220213) 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, 30803922920 + ... + 30803923137.

It is an arithmetic number, because the mean of its divisors is an integer number (1694215766595).

Almost surely, 2^{6715255220213} is an apocalyptic number.

It is an amenable number.

6715255220213 is a deficient number, since it is larger than the sum of its proper divisors (61607846167).

6715255220213 is a wasteful number, since it uses less digits than its factorization.

6715255220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61607846166.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 6715255220213 in words is "six trillion, seven hundred fifteen billion, two hundred fifty-five million, two hundred twenty thousand, two hundred thirteen".