523373321557 has 8 divisors (see below), whose sum is σ = 525469172480. Its totient is φ = 521281452960.

The previous prime is 523373321521. The next prime is 523373321573. The reversal of 523373321557 is 755123373325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523373321557 - 2³⁵ = 489013583189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523373321587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732069 + ... + 1258042.

It is an arithmetic number, because the mean of its divisors is an integer number (65683646560).

Almost surely, 2^523373321557 is an apocalyptic number.

It is an amenable number.

523373321557 is a deficient number, since it is larger than the sum of its proper divisors (2095850923).

523373321557 is a wasteful number, since it uses less digits than its factorization.

523373321557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991163.

The product of its digits is 1984500, while the sum is 46.

The spelling of 523373321557 in words is "five hundred twenty-three billion, three hundred seventy-three million, three hundred twenty-one thousand, five hundred fifty-seven".