20410666352021 has 8 divisors (see below), whose sum is σ = 22268343153888. Its totient is φ = 18553349830000.

The previous prime is 20410666352003. The next prime is 20410666352047. The reversal of 20410666352021 is 12025366601402.

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 20410666352021 - 2²⁶ = 20410599243157 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 (20410666352051) 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, 89951495 + ... + 90178116.

It is an arithmetic number, because the mean of its divisors is an integer number (2783542894236).

Almost surely, 2^{20410666352021} is an apocalyptic number.

It is an amenable number.

20410666352021 is a deficient number, since it is larger than the sum of its proper divisors (1857676801867).

20410666352021 is a wasteful number, since it uses less digits than its factorization.

20410666352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180139923.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 20410666352021 in words is "twenty trillion, four hundred ten billion, six hundred sixty-six million, three hundred fifty-two thousand, twenty-one".