20006745157463 has 4 divisors (see below), whose sum is σ = 20016763559640. Its totient is φ = 19996726755288.

The previous prime is 20006745157459. The next prime is 20006745157513. The reversal of 20006745157463 is 36475154760002.

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 20006745157463 - 2² = 20006745157459 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 (20006745157423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009198093 + ... + 5009202086.

It is an arithmetic number, because the mean of its divisors is an integer number (5004190889910).

Almost surely, 2^{20006745157463} is an apocalyptic number.

20006745157463 is a deficient number, since it is larger than the sum of its proper divisors (10018402177).

20006745157463 is a wasteful number, since it uses less digits than its factorization.

20006745157463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10018402176.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 20006745157463 in words is "twenty trillion, six billion, seven hundred forty-five million, one hundred fifty-seven thousand, four hundred sixty-three".