523405846864 has 20 divisors (see below), whose sum is σ = 1014655165056. Its totient is φ = 261559352672.

The previous prime is 523405846861. The next prime is 523405846913. The reversal of 523405846864 is 468648504325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523405846861) 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, 8943094 + ... + 9001429.

Almost surely, 2^523405846864 is an apocalyptic number.

It is an amenable number.

523405846864 is a deficient number, since it is larger than the sum of its proper divisors (491249318192).

523405846864 is a wasteful number, since it uses less digits than its factorization.

523405846864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17946354 (or 17946348 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 55.

The spelling of 523405846864 in words is "five hundred twenty-three billion, four hundred five million, eight hundred forty-six thousand, eight hundred sixty-four".