51403613605563 has 16 divisors (see below), whose sum is σ = 71701922223360. Its totient is φ = 32694850825824.

The previous prime is 51403613605489. The next prime is 51403613605571. The reversal of 51403613605563 is 36550631630415.

It is not a de Polignac number, because 51403613605563 - 2⁹ = 51403613605051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51403613605573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957530881 + ... + 957584562.

It is an arithmetic number, because the mean of its divisors is an integer number (4481370138960).

Almost surely, 2^{51403613605563} is an apocalyptic number.

51403613605563 is a deficient number, since it is larger than the sum of its proper divisors (20298308617797).

51403613605563 is a wasteful number, since it uses less digits than its factorization.

51403613605563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915115858.

The product of its (nonzero) digits is 2916000, while the sum is 48.

The spelling of 51403613605563 in words is "fifty-one trillion, four hundred three billion, six hundred thirteen million, six hundred five thousand, five hundred sixty-three".