385940657528 has 8 divisors (see below), whose sum is σ = 723638732880. Its totient is φ = 192970328760.

The previous prime is 385940657513. The next prime is 385940657563. The reversal of 385940657528 is 825756049583.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×385940657528² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24121291088 + ... + 24121291103.

It is an arithmetic number, because the mean of its divisors is an integer number (90454841610).

Almost surely, 2^385940657528 is an apocalyptic number.

It is an amenable number.

385940657528 is a deficient number, since it is larger than the sum of its proper divisors (337698075352).

385940657528 is a wasteful number, since it uses less digits than its factorization.

385940657528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48242582197 (or 48242582193 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 62.

The spelling of 385940657528 in words is "three hundred eighty-five billion, nine hundred forty million, six hundred fifty-seven thousand, five hundred twenty-eight".