21355456440202 has 8 divisors (see below), whose sum is σ = 32083002989856. Its totient is φ = 10661122110252.

The previous prime is 21355456440173. The next prime is 21355456440257. The reversal of 21355456440202 is 20204465455312.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8303053318 + ... + 8303055889.

It is an arithmetic number, because the mean of its divisors is an integer number (4010375373732).

Almost surely, 2^{21355456440202} is an apocalyptic number.

21355456440202 is a deficient number, since it is larger than the sum of its proper divisors (10727546549654).

21355456440202 is a wasteful number, since it uses less digits than its factorization.

21355456440202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16606109852.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 21355456440202 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred fifty-six million, four hundred forty thousand, two hundred two".