20123475846784 has 32 divisors (see below), whose sum is σ = 40091091683940. Its totient is φ = 10061397934080.

The previous prime is 20123475846779. The next prime is 20123475846827. The reversal of 20123475846784 is 48764857432102.

It can be written as a sum of positive squares in 2 ways, for example, as 19389931560000 + 733544286784 = 4403400^2 + 856472^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 1168122 + ... + 6450694.

Almost surely, 2^{20123475846784} is an apocalyptic number.

It is an amenable number.

20123475846784 is a deficient number, since it is larger than the sum of its proper divisors (19967615837156).

20123475846784 is an equidigital number, since it uses as much as digits as its factorization.

20123475846784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312348 (or 5312336 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 61.

The spelling of 20123475846784 in words is "twenty trillion, one hundred twenty-three billion, four hundred seventy-five million, eight hundred forty-six thousand, seven hundred eighty-four".