20416548913 has 4 divisors (see below), whose sum is σ = 20508103168. Its totient is φ = 20324994660.

The previous prime is 20416548907. The next prime is 20416548923. The reversal of 20416548913 is 31984561402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31984561402 = 2 ⋅15992280701.

It is a cyclic number.

It is not a de Polignac number, because 20416548913 - 2¹⁷ = 20416417841 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 20416548913.

It is not an unprimeable number, because it can be changed into a prime (20416548923) 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, 45776793 + ... + 45777238.

It is an arithmetic number, because the mean of its divisors is an integer number (5127025792).

Almost surely, 2^20416548913 is an apocalyptic number.

It is an amenable number.

20416548913 is a deficient number, since it is larger than the sum of its proper divisors (91554255).

20416548913 is an equidigital number, since it uses as much as digits as its factorization.

20416548913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91554254.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 20416548913 in words is "twenty billion, four hundred sixteen million, five hundred forty-eight thousand, nine hundred thirteen".