20255115213 has 24 divisors (see below), whose sum is σ = 29956706208. Its totient is φ = 13181045472.

The previous prime is 20255115197. The next prime is 20255115217. The reversal of 20255115213 is 31251155202.

It is not a de Polignac number, because 20255115213 - 2⁴ = 20255115197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255115217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 629431 + ... + 660827.

It is an arithmetic number, because the mean of its divisors is an integer number (1248196092).

Almost surely, 2^20255115213 is an apocalyptic number.

It is an amenable number.

20255115213 is a deficient number, since it is larger than the sum of its proper divisors (9701590995).

20255115213 is a wasteful number, since it uses less digits than its factorization.

20255115213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33113 (or 33110 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 20255115213 in words is "twenty billion, two hundred fifty-five million, one hundred fifteen thousand, two hundred thirteen".