20354776220253 has 4 divisors (see below), whose sum is σ = 27139701627008. Its totient is φ = 13569850813500.

The previous prime is 20354776220201. The next prime is 20354776220293. The reversal of 20354776220253 is 35202267745302.

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.

It is not a de Polignac number, because 20354776220253 - 2⁹ = 20354776219741 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 (20354776220293) 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, 3392462703373 + ... + 3392462703378.

It is an arithmetic number, because the mean of its divisors is an integer number (6784925406752).

Almost surely, 2^{20354776220253} is an apocalyptic number.

It is an amenable number.

20354776220253 is a deficient number, since it is larger than the sum of its proper divisors (6784925406755).

20354776220253 is an equidigital number, since it uses as much as digits as its factorization.

20354776220253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784925406754.

The product of its (nonzero) digits is 4233600, while the sum is 48.

The spelling of 20354776220253 in words is "twenty trillion, three hundred fifty-four billion, seven hundred seventy-six million, two hundred twenty thousand, two hundred fifty-three".