523302423521657 has 4 divisors (see below), whose sum is σ = 563556456100260. Its totient is φ = 483048390943056.

The previous prime is 523302423521609. The next prime is 523302423521663. The reversal of 523302423521657 is 756125324203325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183283427844841 + 340018995676816 = 13538221^2 + 18439604^2 .

It is a cyclic number.

It is not a de Polignac number, because 523302423521657 - 2¹⁶ = 523302423456121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523302423521687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20127016289282 + ... + 20127016289307.

It is an arithmetic number, because the mean of its divisors is an integer number (140889114025065).

Almost surely, 2^{523302423521657} is an apocalyptic number.

It is an amenable number.

523302423521657 is a deficient number, since it is larger than the sum of its proper divisors (40254032578603).

523302423521657 is a wasteful number, since it uses less digits than its factorization.

523302423521657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40254032578602.

The product of its (nonzero) digits is 9072000, while the sum is 50.

The spelling of 523302423521657 in words is "five hundred twenty-three trillion, three hundred two billion, four hundred twenty-three million, five hundred twenty-one thousand, six hundred fifty-seven".