523661152093 has 4 divisors (see below), whose sum is σ = 523890729628. Its totient is φ = 523431574560.

The previous prime is 523661151973. The next prime is 523661152123. The reversal of 523661152093 is 390251166325.

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 332423739844 + 191237412249 = 576562^2 + 437307^2 .

It is a cyclic number.

It is not a de Polignac number, because 523661152093 - 2²⁹ = 523124281181 is a prime.

It is a super-2 number, since 2×523661152093² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523661102093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114785346 + ... + 114789907.

It is an arithmetic number, because the mean of its divisors is an integer number (130972682407).

Almost surely, 2^523661152093 is an apocalyptic number.

It is an amenable number.

523661152093 is a deficient number, since it is larger than the sum of its proper divisors (229577535).

523661152093 is a wasteful number, since it uses less digits than its factorization.

523661152093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229577534.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 523661152093 in words is "five hundred twenty-three billion, six hundred sixty-one million, one hundred fifty-two thousand, ninety-three".