385775012581 has 8 divisors (see below), whose sum is σ = 440889488960. Its totient is φ = 330661476288.

The previous prime is 385775012521. The next prime is 385775012593. The reversal of 385775012581 is 185210577583.

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-385775012581 is a prime.

It is a super-2 number, since 2×385775012581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385775012501) 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 7 ways as a sum of consecutive naturals, for example, 1444525 + ... + 1690621.

It is an arithmetic number, because the mean of its divisors is an integer number (55111186120).

Almost surely, 2^385775012581 is an apocalyptic number.

It is an amenable number.

385775012581 is a deficient number, since it is larger than the sum of its proper divisors (55114476379).

385775012581 is a wasteful number, since it uses less digits than its factorization.

385775012581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470043.

The product of its (nonzero) digits is 2352000, while the sum is 52.

The spelling of 385775012581 in words is "three hundred eighty-five billion, seven hundred seventy-five million, twelve thousand, five hundred eighty-one".