1006623205421 has 8 divisors (see below), whose sum is σ = 1023196383264. Its totient is φ = 990052323120.

The previous prime is 1006623205417. The next prime is 1006623205487. The reversal of 1006623205421 is 1245023266001.

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 1006623205421 - 2² = 1006623205417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006623205921) 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, 321770 + ... + 1454916.

It is an arithmetic number, because the mean of its divisors is an integer number (127899547908).

Almost surely, 2^{1006623205421} is an apocalyptic number.

It is an amenable number.

1006623205421 is a deficient number, since it is larger than the sum of its proper divisors (16573177843).

1006623205421 is a wasteful number, since it uses less digits than its factorization.

1006623205421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147771.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 1006623205421 in words is "one trillion, six billion, six hundred twenty-three million, two hundred five thousand, four hundred twenty-one".