385437315861 has 80 divisors (see below), whose sum is σ = 670344259200. Its totient is φ = 218634774912.

The previous prime is 385437315859. The next prime is 385437315869. The reversal of 385437315861 is 168513734583.

385437315861 is a `hidden beast` number, since 3 + 8 + 54 + 3 + 7 + 3 + 1 + 586 + 1 = 666.

It is not a de Polignac number, because 385437315861 - 2¹ = 385437315859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385437315798 and 385437315807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385437315869) 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 79 ways as a sum of consecutive naturals, for example, 479920 + ... + 1000598.

It is an arithmetic number, because the mean of its divisors is an integer number (8379303240).

Almost surely, 2^385437315861 is an apocalyptic number.

It is an amenable number.

385437315861 is a deficient number, since it is larger than the sum of its proper divisors (284906943339).

385437315861 is a wasteful number, since it uses less digits than its factorization.

385437315861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520760 (or 520751 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 385437315861 in words is "three hundred eighty-five billion, four hundred thirty-seven million, three hundred fifteen thousand, eight hundred sixty-one".