536421665423 has 8 divisors (see below), whose sum is σ = 625564624800. Its totient is φ = 459789998640.

The previous prime is 536421665419. The next prime is 536421665443. The reversal of 536421665423 is 324566124635.

It is not a de Polignac number, because 536421665423 - 2² = 536421665419 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 (536421665443) 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, 781955438 + ... + 781956123.

It is an arithmetic number, because the mean of its divisors is an integer number (78195578100).

Almost surely, 2^536421665423 is an apocalyptic number.

536421665423 is a deficient number, since it is larger than the sum of its proper divisors (89142959377).

536421665423 is an equidigital number, since it uses as much as digits as its factorization.

536421665423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563911582 (or 1563911568 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 47.

The spelling of 536421665423 in words is "five hundred thirty-six billion, four hundred twenty-one million, six hundred sixty-five thousand, four hundred twenty-three".