21852998402 has 8 divisors (see below), whose sum is σ = 32795868816. Its totient is φ = 10921042132.

The previous prime is 21852998357. The next prime is 21852998491. The reversal of 21852998402 is 20489925812.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2723528 + ... + 2731539.

It is an arithmetic number, because the mean of its divisors is an integer number (4099483602).

Almost surely, 2^21852998402 is an apocalyptic number.

21852998402 is a deficient number, since it is larger than the sum of its proper divisors (10942870414).

21852998402 is a wasteful number, since it uses less digits than its factorization.

21852998402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457072.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 21852998402 in words is "twenty-one billion, eight hundred fifty-two million, nine hundred ninety-eight thousand, four hundred two".