115221315552 has 96 divisors (see below), whose sum is σ = 346567237632. Its totient is φ = 32834348544.

The previous prime is 115221315541. The next prime is 115221315557. The reversal of 115221315552 is 255513122511.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115221315557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33538 + ... + 481214.

It is an arithmetic number, because the mean of its divisors is an integer number (3610075392).

Almost surely, 2^115221315552 is an apocalyptic number.

115221315552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115221315552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173283618816).

115221315552 is an abundant number, since it is smaller than the sum of its proper divisors (231345922080).

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

115221315552 is a wasteful number, since it uses less digits than its factorization.

115221315552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448080 (or 448072 counting only the distinct ones).

The product of its digits is 15000, while the sum is 33.

The spelling of 115221315552 in words is "one hundred fifteen billion, two hundred twenty-one million, three hundred fifteen thousand, five hundred fifty-two".