385550551690 has 16 divisors (see below), whose sum is σ = 717921717480. Its totient is φ = 148902281920.

The previous prime is 385550551679. The next prime is 385550551759. The reversal of 385550551690 is 96155055583.

It can be written as a sum of positive squares in 4 ways, for example, as 356147561961 + 29402989729 = 596781^2 + 171473^2 .

It is a super-2 number, since 2×385550551690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664742041 + ... + 664742620.

Almost surely, 2^385550551690 is an apocalyptic number.

385550551690 is a deficient number, since it is larger than the sum of its proper divisors (332371165790).

385550551690 is a wasteful number, since it uses less digits than its factorization.

385550551690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329484697.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 385550551690 in words is "three hundred eighty-five billion, five hundred fifty million, five hundred fifty-one thousand, six hundred ninety".