20463620105 has 8 divisors (see below), whose sum is σ = 24608930112. Its totient is φ = 16335838768.

The previous prime is 20463620083. The next prime is 20463620123. The reversal of 20463620105 is 50102636402.

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 20463620105 - 2¹² = 20463616009 is a prime.

It is a super-2 number, since 2×20463620105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4379597 + ... + 4384266.

It is an arithmetic number, because the mean of its divisors is an integer number (3076116264).

Almost surely, 2^20463620105 is an apocalyptic number.

It is an amenable number.

20463620105 is a deficient number, since it is larger than the sum of its proper divisors (4145310007).

20463620105 is an equidigital number, since it uses as much as digits as its factorization.

20463620105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8764335.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 20463620105 in words is "twenty billion, four hundred sixty-three million, six hundred twenty thousand, one hundred five".