20257771323111 has 8 divisors (see below), whose sum is σ = 30868984873344. Its totient is φ = 11575869327480.

The previous prime is 20257771323077. The next prime is 20257771323113. The reversal of 20257771323111 is 11132317775202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20257771323111 - 2⁷ = 20257771322983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257771323113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482327888625 + ... + 482327888666.

It is an arithmetic number, because the mean of its divisors is an integer number (3858623109168).

Almost surely, 2^{20257771323111} is an apocalyptic number.

20257771323111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20257771323111 is a deficient number, since it is larger than the sum of its proper divisors (10611213550233).

20257771323111 is an equidigital number, since it uses as much as digits as its factorization.

20257771323111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964655777301.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 20257771323111 in words is "twenty trillion, two hundred fifty-seven billion, seven hundred seventy-one million, three hundred twenty-three thousand, one hundred eleven".