523445400001 has 16 divisors (see below), whose sum is σ = 542693258064. Its totient is φ = 504471711744.

The previous prime is 523445399993. The next prime is 523445400041. The reversal of 523445400001 is 100004544325.

It can be written as a sum of positive squares in 8 ways, for example, as 537080625 + 522908319376 = 23175^2 + 723124^2 .

It is a cyclic number.

It is not a de Polignac number, because 523445400001 - 2³ = 523445399993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523445400041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6705145 + ... + 6782761.

It is an arithmetic number, because the mean of its divisors is an integer number (33918328629).

Almost surely, 2^523445400001 is an apocalyptic number.

It is an amenable number.

523445400001 is a deficient number, since it is larger than the sum of its proper divisors (19247858063).

523445400001 is a wasteful number, since it uses less digits than its factorization.

523445400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79380.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 523445400001 its reverse (100004544325), we get a palindrome (623449944326).

The spelling of 523445400001 in words is "five hundred twenty-three billion, four hundred forty-five million, four hundred thousand, one".