6896621456249 has 16 divisors (see below), whose sum is σ = 8149967056896. Its totient is φ = 5710954064400.

The previous prime is 6896621456227. The next prime is 6896621456303. The reversal of 6896621456249 is 9426541266986.

It is a cyclic number.

It is not a de Polignac number, because 6896621456249 - 2³² = 6892326488953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6896621450249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26943887 + ... + 27198644.

It is an arithmetic number, because the mean of its divisors is an integer number (509372941056).

Almost surely, 2^{6896621456249} is an apocalyptic number.

It is an amenable number.

6896621456249 is a deficient number, since it is larger than the sum of its proper divisors (1253345600647).

6896621456249 is a wasteful number, since it uses less digits than its factorization.

6896621456249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54143156.

The product of its digits is 268738560, while the sum is 68.

The spelling of 6896621456249 in words is "six trillion, eight hundred ninety-six billion, six hundred twenty-one million, four hundred fifty-six thousand, two hundred forty-nine".