20651262523363 has 4 divisors (see below), whose sum is σ = 20700315403888. Its totient is φ = 20602209642840.

The previous prime is 20651262523351. The next prime is 20651262523379. The reversal of 20651262523363 is 36332526215602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20651262523363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20651262523963) 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, 24526439631 + ... + 24526440472.

It is an arithmetic number, because the mean of its divisors is an integer number (5175078850972).

Almost surely, 2^{20651262523363} is an apocalyptic number.

20651262523363 is a deficient number, since it is larger than the sum of its proper divisors (49052880525).

20651262523363 is an equidigital number, since it uses as much as digits as its factorization.

20651262523363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49052880524.

The product of its (nonzero) digits is 2332800, while the sum is 46.

Adding to 20651262523363 its reverse (36332526215602), we get a palindrome (56983788738965).

The spelling of 20651262523363 in words is "twenty trillion, six hundred fifty-one billion, two hundred sixty-two million, five hundred twenty-three thousand, three hundred sixty-three".