21010045395 has 8 divisors (see below), whose sum is σ = 33616072656. Its totient is φ = 11205357536.

The previous prime is 21010045387. The next prime is 21010045411. The reversal of 21010045395 is 59354001012.

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

It is a cyclic number.

It is not a de Polignac number, because 21010045395 - 2³ = 21010045387 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700334832 + ... + 700334861.

It is an arithmetic number, because the mean of its divisors is an integer number (4202009082).

Almost surely, 2^21010045395 is an apocalyptic number.

21010045395 is a deficient number, since it is larger than the sum of its proper divisors (12606027261).

21010045395 is a wasteful number, since it uses less digits than its factorization.

21010045395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400669701.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 21010045395 in words is "twenty-one billion, ten million, forty-five thousand, three hundred ninety-five".