515338421532 has 192 divisors, whose sum is σ = 1417720195584. Its totient is φ = 143941058560.

The previous prime is 515338421531. The next prime is 515338421537. The reversal of 515338421532 is 235124833515.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515338421531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70523023 + ... + 70530329.

It is an arithmetic number, because the mean of its divisors is an integer number (7383959352).

Almost surely, 2^515338421532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515338421532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708860097792).

515338421532 is an abundant number, since it is smaller than the sum of its proper divisors (902381774052).

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

515338421532 is a wasteful number, since it uses less digits than its factorization.

515338421532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7988 (or 7986 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The spelling of 515338421532 in words is "five hundred fifteen billion, three hundred thirty-eight million, four hundred twenty-one thousand, five hundred thirty-two".