20352263646621 has 8 divisors (see below), whose sum is σ = 28732607501184. Its totient is φ = 12770047778240.

The previous prime is 20352263646607. The next prime is 20352263646623. The reversal of 20352263646621 is 12664636225302.

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 20352263646621 - 2⁹ = 20352263646109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352263646623) 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, 199531996485 + ... + 199531996586.

It is an arithmetic number, because the mean of its divisors is an integer number (3591575937648).

Almost surely, 2^{20352263646621} is an apocalyptic number.

It is an amenable number.

20352263646621 is a deficient number, since it is larger than the sum of its proper divisors (8380343854563).

20352263646621 is a wasteful number, since it uses less digits than its factorization.

20352263646621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399063993091.

The product of its (nonzero) digits is 3732480, while the sum is 48.

The spelling of 20352263646621 in words is "twenty trillion, three hundred fifty-two billion, two hundred sixty-three million, six hundred forty-six thousand, six hundred twenty-one".