6897904779053 has 16 divisors (see below), whose sum is σ = 6974400506112. Its totient is φ = 6821823120000.

The previous prime is 6897904779049. The next prime is 6897904779061. The reversal of 6897904779053 is 3509774097986.

It is a cyclic number.

It is not a de Polignac number, because 6897904779053 - 2² = 6897904779049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6897904779013) 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, 408853208 + ... + 408870078.

It is an arithmetic number, because the mean of its divisors is an integer number (435900031632).

Almost surely, 2^{6897904779053} is an apocalyptic number.

It is an amenable number.

6897904779053 is a deficient number, since it is larger than the sum of its proper divisors (76495727059).

6897904779053 is a wasteful number, since it uses less digits than its factorization.

6897904779053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28876.

The product of its (nonzero) digits is 720135360, while the sum is 74.

The spelling of 6897904779053 in words is "six trillion, eight hundred ninety-seven billion, nine hundred four million, seven hundred seventy-nine thousand, fifty-three".