6697780232049 has 9 divisors (see below), whose sum is σ = 9674582661003. Its totient is φ = 4465181645352.

The previous prime is 6697780232047. The next prime is 6697780232051. The reversal of 6697780232049 is 9402320877966.

The square root of 6697780232049 is 2588007.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (6697780232047) and next prime (6697780232051).

It can be written as a sum of positive squares in only one way, i.e., 21241022049 + 6676539210000 = 145743^2 + 2583900^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 6697780232049 - 2¹ = 6697780232047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6697780232047) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7332687 + ... + 8195355.

Almost surely, 2^{6697780232049} is an apocalyptic number.

6697780232049 is the 2588007-th square number.

6697780232049 is the 1294004-th centered octagonal number.

It is an amenable number.

6697780232049 is a deficient number, since it is larger than the sum of its proper divisors (2976802428954).

6697780232049 is an frugal number, since it uses more digits than its factorization.

6697780232049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725344 (or 862672 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 6697780232049 in words is "six trillion, six hundred ninety-seven billion, seven hundred eighty million, two hundred thirty-two thousand, forty-nine".