20553123212013 has 16 divisors (see below), whose sum is σ = 31389742526976. Its totient is φ = 11718130223280.

The previous prime is 20553123211987. The next prime is 20553123212047. The reversal of 20553123212013 is 31021232135502.

It is not a de Polignac number, because 20553123212013 - 2⁵ = 20553123211981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553123212053) 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, 1104640983 + ... + 1104659588.

It is an arithmetic number, because the mean of its divisors is an integer number (1961858907936).

Almost surely, 2^{20553123212013} is an apocalyptic number.

It is an amenable number.

20553123212013 is a deficient number, since it is larger than the sum of its proper divisors (10836619314963).

20553123212013 is a wasteful number, since it uses less digits than its factorization.

20553123212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209301024.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 20553123212013 its reverse (31021232135502), we get a palindrome (51574355347515).

The spelling of 20553123212013 in words is "twenty trillion, five hundred fifty-three billion, one hundred twenty-three million, two hundred twelve thousand, thirteen".