515440030350 has 384 divisors, whose sum is σ = 1627895808000. Its totient is φ = 105254069760.

The previous prime is 515440030333. The next prime is 515440030351. The reversal of 515440030350 is 53030044515.

It is a super-2 number, since 2×515440030350² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515440030351) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 24867291 + ... + 24888009.

It is an arithmetic number, because the mean of its divisors is an integer number (4239312000).

Almost surely, 2^515440030350 is an apocalyptic number.

515440030350 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 515440030350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813947904000).

515440030350 is an abundant number, since it is smaller than the sum of its proper divisors (1112455777650).

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

515440030350 is a wasteful number, since it uses less digits than its factorization.

515440030350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20832 (or 20827 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 515440030350 its reverse (53030044515), we get a palindrome (568470074865).

The spelling of 515440030350 in words is "five hundred fifteen billion, four hundred forty million, thirty thousand, three hundred fifty".