515434430140 has 48 divisors (see below), whose sum is σ = 1246783168512. Its totient is φ = 175328870976.

The previous prime is 515434430123. The next prime is 515434430143. The reversal of 515434430140 is 41034434515.

It is a junction number, because it is equal to n+sod(n) for n = 515434430096 and 515434430105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515434430143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14477002 + ... + 14512561.

It is an arithmetic number, because the mean of its divisors is an integer number (25974649344).

Almost surely, 2^515434430140 is an apocalyptic number.

It is an amenable number.

515434430140 is an abundant number, since it is smaller than the sum of its proper divisors (731348738372).

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

515434430140 is a wasteful number, since it uses less digits than its factorization.

515434430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28989706 (or 28989704 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 515434430140 its reverse (41034434515), we get a palindrome (556468864655).

The spelling of 515434430140 in words is "five hundred fifteen billion, four hundred thirty-four million, four hundred thirty thousand, one hundred forty".