20741506463 has 4 divisors (see below), whose sum is σ = 21093057480. Its totient is φ = 20389955448.

The previous prime is 20741506417. The next prime is 20741506481. The reversal of 20741506463 is 36460514702.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20741506463 - 2⁸ = 20741506207 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 (20741506483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175775420 + ... + 175775537.

It is an arithmetic number, because the mean of its divisors is an integer number (5273264370).

Almost surely, 2^20741506463 is an apocalyptic number.

20741506463 is a deficient number, since it is larger than the sum of its proper divisors (351551017).

20741506463 is an equidigital number, since it uses as much as digits as its factorization.

20741506463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351551016.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 20741506463 in words is "twenty billion, seven hundred forty-one million, five hundred six thousand, four hundred sixty-three".