21027773602 has 8 divisors (see below), whose sum is σ = 34409084112. Its totient is φ = 9558078900.

The previous prime is 21027773597. The next prime is 21027773609. The reversal of 21027773602 is 20637772012.

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

It is not an unprimeable number, because it can be changed into a prime (21027773609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477903924 + ... + 477903967.

It is an arithmetic number, because the mean of its divisors is an integer number (4301135514).

Almost surely, 2^21027773602 is an apocalyptic number.

21027773602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21027773602 is a deficient number, since it is larger than the sum of its proper divisors (13381310510).

21027773602 is a wasteful number, since it uses less digits than its factorization.

21027773602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955807904.

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 21027773602 in words is "twenty-one billion, twenty-seven million, seven hundred seventy-three thousand, six hundred two".