50405003645 has 16 divisors (see below), whose sum is σ = 60647825520. Its totient is φ = 40216264704.

The previous prime is 50405003581. The next prime is 50405003647. The reversal of 50405003645 is 54630050405.

It can be written as a sum of positive squares in 8 ways, for example, as 1088142169 + 49316861476 = 32987^2 + 222074^2 .

It is a cyclic number.

It is not a de Polignac number, because 50405003645 - 2⁶ = 50405003581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50405003647) 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 15 ways as a sum of consecutive naturals, for example, 3104669 + ... + 3120861.

It is an arithmetic number, because the mean of its divisors is an integer number (3790489095).

Almost surely, 2^50405003645 is an apocalyptic number.

It is an amenable number.

50405003645 is a deficient number, since it is larger than the sum of its proper divisors (10242821875).

50405003645 is a wasteful number, since it uses less digits than its factorization.

50405003645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17824.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 50405003645 in words is "fifty billion, four hundred five million, three thousand, six hundred forty-five".