20416151440645 has 4 divisors (see below), whose sum is σ = 24499381728780. Its totient is φ = 16332921152512.

The previous prime is 20416151440609. The next prime is 20416151440681. The reversal of 20416151440645 is 54604415161402.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20416151440609) and next prime (20416151440681).

It can be written as a sum of positive squares in 2 ways, for example, as 3296864538529 + 17119286902116 = 1815727^2 + 4137546^2 .

It is a cyclic number.

It is not a de Polignac number, because 20416151440645 - 2³⁹ = 19866395626757 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 2041615144060 + ... + 2041615144069.

It is an arithmetic number, because the mean of its divisors is an integer number (6124845432195).

Almost surely, 2^{20416151440645} is an apocalyptic number.

It is an amenable number.

20416151440645 is a deficient number, since it is larger than the sum of its proper divisors (4083230288135).

20416151440645 is an equidigital number, since it uses as much as digits as its factorization.

20416151440645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083230288134.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 20416151440645 in words is "twenty trillion, four hundred sixteen billion, one hundred fifty-one million, four hundred forty thousand, six hundred forty-five".