515104311040 has 72 divisors (see below), whose sum is σ = 1346002722288. Its totient is φ = 187310653440.

The previous prime is 515104311031. The next prime is 515104311041. The reversal of 515104311040 is 40113401515.

It is a junction number, because it is equal to n+sod(n) for n = 515104310996 and 515104311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515104311041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18277977 + ... + 18306136.

It is an arithmetic number, because the mean of its divisors is an integer number (18694482254).

Almost surely, 2^515104311040 is an apocalyptic number.

It is an amenable number.

515104311040 is an abundant number, since it is smaller than the sum of its proper divisors (830898411248).

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

515104311040 is a wasteful number, since it uses less digits than its factorization.

515104311040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36584145 (or 36584131 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 515104311040 its reverse (40113401515), we get a palindrome (555217712555).

The spelling of 515104311040 in words is "five hundred fifteen billion, one hundred four million, three hundred eleven thousand, forty".