515265447942 has 96 divisors (see below), whose sum is σ = 1307157426432. Its totient is φ = 143619884352.

The previous prime is 515265447937. The next prime is 515265448013. The reversal of 515265447942 is 249744562515.

515265447942 is a `hidden beast` number, since 5 + 1 + 5 + 2 + 6 + 544 + 7 + 94 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4423188 + ... + 4538184.

It is an arithmetic number, because the mean of its divisors is an integer number (13616223192).

Almost surely, 2^515265447942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515265447942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653578713216).

515265447942 is an abundant number, since it is smaller than the sum of its proper divisors (791891978490).

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

515265447942 is a wasteful number, since it uses less digits than its factorization.

515265447942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115882 (or 115879 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 515265447942 in words is "five hundred fifteen billion, two hundred sixty-five million, four hundred forty-seven thousand, nine hundred forty-two".