515442323652 has 12 divisors (see below), whose sum is σ = 1202698755216. Its totient is φ = 171814107880.

The previous prime is 515442323651. The next prime is 515442323659. The reversal of 515442323652 is 256323244515.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (515442323651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21476763474 + ... + 21476763497.

It is an arithmetic number, because the mean of its divisors is an integer number (100224896268).

Almost surely, 2^515442323652 is an apocalyptic number.

It is an amenable number.

515442323652 is an abundant number, since it is smaller than the sum of its proper divisors (687256431564).

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

515442323652 is a wasteful number, since it uses less digits than its factorization.

515442323652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42953526978 (or 42953526976 counting only the distinct ones).

The product of its digits is 864000, while the sum is 42.

The spelling of 515442323652 in words is "five hundred fifteen billion, four hundred forty-two million, three hundred twenty-three thousand, six hundred fifty-two".