21942857169074 has 8 divisors (see below), whose sum is σ = 32916091012380. Its totient is φ = 10970826831616.

The previous prime is 21942857169067. The next prime is 21942857169091. The reversal of 21942857169074 is 47096175824912.

It can be written as a sum of positive squares in 2 ways, for example, as 21008334745225 + 934522423849 = 4583485^2 + 966707^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21942857169074.

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, 300830879 + ... + 300903810.

Almost surely, 2^{21942857169074} is an apocalyptic number.

21942857169074 is a deficient number, since it is larger than the sum of its proper divisors (10973233843306).

21942857169074 is a wasteful number, since it uses less digits than its factorization.

21942857169074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601752924.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 21942857169074 in words is "twenty-one trillion, nine hundred forty-two billion, eight hundred fifty-seven million, one hundred sixty-nine thousand, seventy-four".