21010258033368 has 16 divisors (see below), whose sum is σ = 52525645083480. Its totient is φ = 7003419344448.

The previous prime is 21010258033363. The next prime is 21010258033403. The reversal of 21010258033368 is 86333085201012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010258033363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437713709005 + ... + 437713709052.

Almost surely, 2^{21010258033368} is an apocalyptic number.

It is an amenable number.

21010258033368 is an abundant number, since it is smaller than the sum of its proper divisors (31515387050112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010258033368 is a wasteful number, since it uses less digits than its factorization.

21010258033368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875427418066 (or 875427418062 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 21010258033368 in words is "twenty-one trillion, ten billion, two hundred fifty-eight million, thirty-three thousand, three hundred sixty-eight".