20554270213 has 4 divisors (see below), whose sum is σ = 20560763520. Its totient is φ = 20547776908.

The previous prime is 20554270201. The next prime is 20554270271. The reversal of 20554270213 is 31207245502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31207245502 = 2 ⋅15603622751.

It is a cyclic number.

It is not a de Polignac number, because 20554270213 - 2¹⁷ = 20554139141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554270013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3241903 + ... + 3248236.

It is an arithmetic number, because the mean of its divisors is an integer number (5140190880).

Almost surely, 2^20554270213 is an apocalyptic number.

It is an amenable number.

20554270213 is a deficient number, since it is larger than the sum of its proper divisors (6493307).

20554270213 is an equidigital number, since it uses as much as digits as its factorization.

20554270213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6493306.

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 20554270213 in words is "twenty billion, five hundred fifty-four million, two hundred seventy thousand, two hundred thirteen".