840415343852 has 36 divisors (see below), whose sum is σ = 1717350742800. Its totient is φ = 358808484384.

The previous prime is 840415343827. The next prime is 840415343947. The reversal of 840415343852 is 258343514048.

840415343852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 840415343797 and 840415343806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8100227 + ... + 8203322.

It is an arithmetic number, because the mean of its divisors is an integer number (47704187300).

Almost surely, 2^840415343852 is an apocalyptic number.

It is an amenable number.

840415343852 is an abundant number, since it is smaller than the sum of its proper divisors (876935398948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840415343852 is a wasteful number, since it uses less digits than its factorization.

840415343852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16303830 (or 16303821 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 47.

The spelling of 840415343852 in words is "eight hundred forty billion, four hundred fifteen million, three hundred forty-three thousand, eight hundred fifty-two".