513741599261 has 24 divisors (see below), whose sum is σ = 569365773312. Its totient is φ = 463174588800.

The previous prime is 513741599257. The next prime is 513741599333. The reversal of 513741599261 is 162995147315.

It is a happy number.

It is not a de Polignac number, because 513741599261 - 2² = 513741599257 is a prime.

It is a super-2 number, since 2×513741599261² (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 (513741599561) 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, 50905826 + ... + 50915916.

It is an arithmetic number, because the mean of its divisors is an integer number (23723573888).

Almost surely, 2^513741599261 is an apocalyptic number.

It is an amenable number.

513741599261 is a deficient number, since it is larger than the sum of its proper divisors (55624174051).

513741599261 is a wasteful number, since it uses less digits than its factorization.

513741599261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13553 (or 13542 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 53.

The spelling of 513741599261 in words is "five hundred thirteen billion, seven hundred forty-one million, five hundred ninety-nine thousand, two hundred sixty-one".