20553344050505 has 24 divisors (see below), whose sum is σ = 29943062587968. Its totient is φ = 13264679179008.

The previous prime is 20553344050501. The next prime is 20553344050531. The reversal of 20553344050505 is 50505044335502.

It is not a de Polignac number, because 20553344050505 - 2² = 20553344050501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20553344050501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1015973279 + ... + 1015993508.

It is an arithmetic number, because the mean of its divisors is an integer number (1247627607832).

Almost surely, 2^{20553344050505} is an apocalyptic number.

It is an amenable number.

20553344050505 is a deficient number, since it is larger than the sum of its proper divisors (9389718537463).

20553344050505 is a wasteful number, since it uses less digits than its factorization.

20553344050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031966833 (or 2031966816 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 41.

The spelling of 20553344050505 in words is "twenty trillion, five hundred fifty-three billion, three hundred forty-four million, fifty thousand, five hundred five".