12165519350 has 24 divisors (see below), whose sum is σ = 22937843640. Its totient is φ = 4799545920.

The previous prime is 12165519349. The next prime is 12165519361. The reversal of 12165519350 is 5391556121.

It is a happy number.

It is a super-2 number, since 2×12165519350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1662860 + ... + 1670159.

It is an arithmetic number, because the mean of its divisors is an integer number (955743485).

Almost surely, 2^12165519350 is an apocalyptic number.

12165519350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12165519350 is a deficient number, since it is larger than the sum of its proper divisors (10772324290).

12165519350 is a wasteful number, since it uses less digits than its factorization.

12165519350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333104 (or 3333099 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 38.

The spelling of 12165519350 in words is "twelve billion, one hundred sixty-five million, five hundred nineteen thousand, three hundred fifty".