115515423325550 has 48 divisors (see below), whose sum is σ = 214949998309200. Its totient is φ = 46186536614400.

The previous prime is 115515423325541. The next prime is 115515423325553. The reversal of 115515423325550 is 55523324515511.

It is a junction number, because it is equal to n+sod(n) for n = 115515423325495 and 115515423325504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115515423325553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1276636310 + ... + 1276726790.

It is an arithmetic number, because the mean of its divisors is an integer number (4478124964775).

Almost surely, 2^{115515423325550} is an apocalyptic number.

115515423325550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115515423325550 is a deficient number, since it is larger than the sum of its proper divisors (99434574983650).

115515423325550 is a wasteful number, since it uses less digits than its factorization.

115515423325550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101061 (or 101056 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 47.

The spelling of 115515423325550 in words is "one hundred fifteen trillion, five hundred fifteen billion, four hundred twenty-three million, three hundred twenty-five thousand, five hundred fifty".