6900420566385 has 48 divisors (see below), whose sum is σ = 12483867487104. Its totient is φ = 3519338270976.

The previous prime is 6900420566311. The next prime is 6900420566419. The reversal of 6900420566385 is 5836650240096.

6900420566385 is a `hidden beast` number, since 6 + 9 + 0 + 0 + 42 + 0 + 566 + 38 + 5 = 666.

It is not a de Polignac number, because 6900420566385 - 2⁸ = 6900420566129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3340149 + ... + 4995741.

It is an arithmetic number, because the mean of its divisors is an integer number (260080572648).

Almost surely, 2^{6900420566385} is an apocalyptic number.

It is an amenable number.

6900420566385 is a deficient number, since it is larger than the sum of its proper divisors (5583446920719).

6900420566385 is a wasteful number, since it uses less digits than its factorization.

6900420566385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659654 (or 1659651 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 6900420566385 in words is "six trillion, nine hundred billion, four hundred twenty million, five hundred sixty-six thousand, three hundred eighty-five".