515015104041020 has 48 divisors (see below), whose sum is σ = 1249255888741728. Its totient is φ = 176261853788160.

The previous prime is 515015104041019. The next prime is 515015104041029. The reversal of 515015104041020 is 20140401510515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515015104041029) 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, 68852282897 + ... + 68852290376.

It is an arithmetic number, because the mean of its divisors is an integer number (26026164348786).

Almost surely, 2^{515015104041020} is an apocalyptic number.

It is an amenable number.

515015104041020 is an abundant number, since it is smaller than the sum of its proper divisors (734240784700708).

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

515015104041020 is a wasteful number, since it uses less digits than its factorization.

515015104041020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137704573310 (or 137704573308 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 515015104041020 its reverse (20140401510515), we get a palindrome (535155505551535).

The spelling of 515015104041020 in words is "five hundred fifteen trillion, fifteen billion, one hundred four million, forty-one thousand, twenty".