20255620711 has 4 divisors (see below), whose sum is σ = 20264283000. Its totient is φ = 20246958424.

The previous prime is 20255620667. The next prime is 20255620739. The reversal of 20255620711 is 11702655202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20255620711 - 2⁹ = 20255620199 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 (20255620811) 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, 4327636 + ... + 4332313.

It is an arithmetic number, because the mean of its divisors is an integer number (5066070750).

Almost surely, 2^20255620711 is an apocalyptic number.

20255620711 is a deficient number, since it is larger than the sum of its proper divisors (8662289).

20255620711 is an equidigital number, since it uses as much as digits as its factorization.

20255620711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662288.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 20255620711 in words is "twenty billion, two hundred fifty-five million, six hundred twenty thousand, seven hundred eleven".