21068393245901 has 8 divisors (see below), whose sum is σ = 22098188202240. Its totient is φ = 20062828759248.

The previous prime is 21068393245871. The next prime is 21068393245919. The reversal of 21068393245901 is 10954239386012.

It is a happy number.

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 21068393245901 - 2³⁴ = 21051213376717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21068393245951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6057615641 + ... + 6057619118.

It is an arithmetic number, because the mean of its divisors is an integer number (2762273525280).

Almost surely, 2^{21068393245901} is an apocalyptic number.

It is an amenable number.

21068393245901 is a deficient number, since it is larger than the sum of its proper divisors (1029794956339).

21068393245901 is a wasteful number, since it uses less digits than its factorization.

21068393245901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12115234843.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 21068393245901 in words is "twenty-one trillion, sixty-eight billion, three hundred ninety-three million, two hundred forty-five thousand, nine hundred one".