20255440413 has 24 divisors (see below), whose sum is σ = 29796364512. Its totient is φ = 12229683648.

The previous prime is 20255440411. The next prime is 20255440463. The reversal of 20255440413 is 31404455202.

It is not a de Polignac number, because 20255440413 - 2¹ = 20255440411 is a prime.

It is a super-2 number, since 2×20255440413² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255440411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350031 + ... + 403772.

It is an arithmetic number, because the mean of its divisors is an integer number (1241515188).

Almost surely, 2^20255440413 is an apocalyptic number.

It is an amenable number.

20255440413 is a deficient number, since it is larger than the sum of its proper divisors (9540924099).

20255440413 is a wasteful number, since it uses less digits than its factorization.

20255440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753885 (or 753872 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20255440413 its reverse (31404455202), we get a palindrome (51659895615).

The spelling of 20255440413 in words is "twenty billion, two hundred fifty-five million, four hundred forty thousand, four hundred thirteen".