921599852543 has 16 divisors (see below), whose sum is σ = 976035619200. Its totient is φ = 867768461280.

The previous prime is 921599852521. The next prime is 921599852549. The reversal of 921599852543 is 345258995129.

It is a cyclic number.

It is not a de Polignac number, because 921599852543 - 2³² = 917304885247 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 (921599852549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2781788 + ... + 3095406.

It is an arithmetic number, because the mean of its divisors is an integer number (61002226200).

Almost surely, 2^921599852543 is an apocalyptic number.

921599852543 is a deficient number, since it is larger than the sum of its proper divisors (54435766657).

921599852543 is a wasteful number, since it uses less digits than its factorization.

921599852543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314582.

The product of its digits is 34992000, while the sum is 62.

The spelling of 921599852543 in words is "nine hundred twenty-one billion, five hundred ninety-nine million, eight hundred fifty-two thousand, five hundred forty-three".