469819355821 has 16 divisors (see below), whose sum is σ = 485959499776. Its totient is φ = 453741750000.

The previous prime is 469819355783. The next prime is 469819355893. The reversal of 469819355821 is 128553918964.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-469819355821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 469819355821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469819355021) 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, 32280496 + ... + 32295046.

It is an arithmetic number, because the mean of its divisors is an integer number (30372468736).

Almost surely, 2^469819355821 is an apocalyptic number.

It is an amenable number.

469819355821 is a deficient number, since it is larger than the sum of its proper divisors (16140143955).

469819355821 is a wasteful number, since it uses less digits than its factorization.

469819355821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16624.

The product of its digits is 18662400, while the sum is 61.

The spelling of 469819355821 in words is "four hundred sixty-nine billion, eight hundred nineteen million, three hundred fifty-five thousand, eight hundred twenty-one".