513138261108 has 24 divisors (see below), whose sum is σ = 1306170119520. Its totient is φ = 155496442720.

The previous prime is 513138261091. The next prime is 513138261127. The reversal of 513138261108 is 801162831315.

It is a super-3 number, since 3×513138261108³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1943705403 + ... + 1943705666.

It is an arithmetic number, because the mean of its divisors is an integer number (54423754980).

Almost surely, 2^513138261108 is an apocalyptic number.

It is an amenable number.

513138261108 is an abundant number, since it is smaller than the sum of its proper divisors (793031858412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513138261108 is a wasteful number, since it uses less digits than its factorization.

513138261108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887411087 (or 3887411085 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 513138261108 in words is "five hundred thirteen billion, one hundred thirty-eight million, two hundred sixty-one thousand, one hundred eight".