255021133413 has 4 divisors (see below), whose sum is σ = 340028177888. Its totient is φ = 170014088940.

The previous prime is 255021133373. The next prime is 255021133421. The reversal of 255021133413 is 314331120552.

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 255021133413 - 2¹⁶ = 255021067877 is a prime.

It is a super-2 number, since 2×255021133413² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255021133463) 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, 42503522233 + ... + 42503522238.

It is an arithmetic number, because the mean of its divisors is an integer number (85007044472).

Almost surely, 2^255021133413 is an apocalyptic number.

It is an amenable number.

255021133413 is a deficient number, since it is larger than the sum of its proper divisors (85007044475).

255021133413 is an equidigital number, since it uses as much as digits as its factorization.

255021133413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85007044474.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 255021133413 its reverse (314331120552), we get a palindrome (569352253965).

The spelling of 255021133413 in words is "two hundred fifty-five billion, twenty-one million, one hundred thirty-three thousand, four hundred thirteen".