6602391918145 has 32 divisors (see below), whose sum is σ = 8431102490400. Its totient is φ = 4946267344896.

The previous prime is 6602391918137. The next prime is 6602391918169. The reversal of 6602391918145 is 5418191932066.

It is a Cunningham number, because it is equal to 2569512²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 1823450523904 + 4778941394241 = 1350352^2 + 2186079^2 .

It is a cyclic number.

It is not a de Polignac number, because 6602391918145 - 2³ = 6602391918137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16495651 + ... + 16891159.

It is an arithmetic number, because the mean of its divisors is an integer number (263471952825).

Almost surely, 2^{6602391918145} is an apocalyptic number.

It is an amenable number.

6602391918145 is a deficient number, since it is larger than the sum of its proper divisors (1828710572255).

6602391918145 is a wasteful number, since it uses less digits than its factorization.

6602391918145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396517.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 6602391918145 in words is "six trillion, six hundred two billion, three hundred ninety-one million, nine hundred eighteen thousand, one hundred forty-five".