818781352032 has 48 divisors (see below), whose sum is σ = 2456344058112. Its totient is φ = 233937528960.

The previous prime is 818781352027. The next prime is 818781352033. The reversal of 818781352032 is 230253187818.

818781352032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818781352033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609211644 + ... + 609212987.

It is an arithmetic number, because the mean of its divisors is an integer number (51173834544).

Almost surely, 2^818781352032 is an apocalyptic number.

It is an amenable number.

818781352032 is an abundant number, since it is smaller than the sum of its proper divisors (1637562706080).

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

818781352032 is a wasteful number, since it uses less digits than its factorization.

818781352032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218424651 (or 1218424643 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 818781352032 in words is "eight hundred eighteen billion, seven hundred eighty-one million, three hundred fifty-two thousand, thirty-two".