20630253626413 has 4 divisors (see below), whose sum is σ = 20630748885280. Its totient is φ = 20629758367548.

The previous prime is 20630253626363. The next prime is 20630253626447. The reversal of 20630253626413 is 31462635203602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20630253626413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20630253626413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630253626483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247566945 + ... + 247650262.

It is an arithmetic number, because the mean of its divisors is an integer number (5157687221320).

Almost surely, 2^{20630253626413} is an apocalyptic number.

It is an amenable number.

20630253626413 is a deficient number, since it is larger than the sum of its proper divisors (495258867).

20630253626413 is an equidigital number, since it uses as much as digits as its factorization.

20630253626413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495258866.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 20630253626413 in words is "twenty trillion, six hundred thirty billion, two hundred fifty-three million, six hundred twenty-six thousand, four hundred thirteen".