385568546521 has 8 divisors (see below), whose sum is σ = 386496903240. Its totient is φ = 384640365312.

The previous prime is 385568546491. The next prime is 385568546593. The reversal of 385568546521 is 125645865583.

It can be written as a sum of positive squares in 4 ways, for example, as 1013530896 + 384555015625 = 31836^2 + 620125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385568546521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385568544521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5066871 + ... + 5142403.

It is an arithmetic number, because the mean of its divisors is an integer number (48312112905).

Almost surely, 2^385568546521 is an apocalyptic number.

It is an amenable number.

385568546521 is a deficient number, since it is larger than the sum of its proper divisors (928356719).

385568546521 is a wasteful number, since it uses less digits than its factorization.

385568546521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87755.

The product of its digits is 34560000, while the sum is 58.

The spelling of 385568546521 in words is "three hundred eighty-five billion, five hundred sixty-eight million, five hundred forty-six thousand, five hundred twenty-one".