513540050250 has 128 divisors (see below), whose sum is σ = 1358804678400. Its totient is φ = 128735692800.

The previous prime is 513540050249. The next prime is 513540050251. The reversal of 513540050250 is 52050045315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (513540050249) and next prime (513540050251).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (513540050251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10928806 + ... + 10975694.

It is an arithmetic number, because the mean of its divisors is an integer number (10615661550).

Almost surely, 2^513540050250 is an apocalyptic number.

513540050250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 513540050250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679402339200).

513540050250 is an abundant number, since it is smaller than the sum of its proper divisors (845264628150).

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

513540050250 is a wasteful number, since it uses less digits than its factorization.

513540050250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47785 (or 47775 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 513540050250 its reverse (52050045315), we get a palindrome (565590095565).

The spelling of 513540050250 in words is "five hundred thirteen billion, five hundred forty million, fifty thousand, two hundred fifty".