115772784516 has 63 divisors (see below), whose sum is σ = 303812816853. Its totient is φ = 38584803600.

The previous prime is 115772784509. The next prime is 115772784539. The reversal of 115772784516 is 615487277511.

It is a happy number.

The square root of 115772784516 is 340254.

It is a perfect power (a square), and thus also a powerful number.

115772784516 is a `hidden beast` number, since 1 + 1 + 57 + 7 + 2 + 78 + 4 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 71420424516 + 44352360000 = 267246^2 + 210600^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 18370566 + ... + 18376866.

Almost surely, 2^115772784516 is an apocalyptic number.

115772784516 is the 340254-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115772784516

115772784516 is an abundant number, since it is smaller than the sum of its proper divisors (188040032337).

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

115772784516 is an frugal number, since it uses more digits than its factorization.

115772784516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624 (or 6306 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 54.

The spelling of 115772784516 in words is "one hundred fifteen billion, seven hundred seventy-two million, seven hundred eighty-four thousand, five hundred sixteen".