523425764413520 has 20 divisors (see below), whose sum is σ = 1216964902261620. Its totient is φ = 209370305765376.

The previous prime is 523425764413441. The next prime is 523425764413537. The reversal of 523425764413520 is 25314467524325.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 364454215587856 + 158971548825664 = 19090684^2 + 12608392^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271411027505 + ... + 3271411027664.

It is an arithmetic number, because the mean of its divisors is an integer number (60848245113081).

Almost surely, 2^{523425764413520} is an apocalyptic number.

It is an amenable number.

523425764413520 is an abundant number, since it is smaller than the sum of its proper divisors (693539137848100).

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

523425764413520 is a wasteful number, since it uses less digits than its factorization.

523425764413520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542822055182 (or 6542822055176 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 53.

The spelling of 523425764413520 in words is "five hundred twenty-three trillion, four hundred twenty-five billion, seven hundred sixty-four million, four hundred thirteen thousand, five hundred twenty".