523147444020 has 168 divisors, whose sum is σ = 1744053590664. Its totient is φ = 131299688448.

The previous prime is 523147443991. The next prime is 523147444021. The reversal of 523147444020 is 20444741325.

523147444020 is a `hidden beast` number, since 52 + 3 + 147 + 4 + 440 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23801701284 + 499345742736 = 154278^2 + 706644^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523147444021) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 807469 + ... + 1303188.

It is an arithmetic number, because the mean of its divisors is an integer number (10381271373).

Almost surely, 2^523147444020 is an apocalyptic number.

It is an amenable number.

523147444020 is an abundant number, since it is smaller than the sum of its proper divisors (1220906146644).

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

523147444020 is a wasteful number, since it uses less digits than its factorization.

523147444020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110701 (or 2110684 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The spelling of 523147444020 in words is "five hundred twenty-three billion, one hundred forty-seven million, four hundred forty-four thousand, twenty".