12343787550 has 144 divisors (see below), whose sum is σ = 35170873920. Its totient is φ = 3093073920.

The previous prime is 12343787537. The next prime is 12343787569. The reversal of 12343787550 is 5578734321.

12343787550 is a `hidden beast` number, since 1 + 23 + 4 + 3 + 78 + 7 + 550 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 12343787496 and 12343787505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7947574 + ... + 7949126.

It is an arithmetic number, because the mean of its divisors is an integer number (244242180).

Almost surely, 2^12343787550 is an apocalyptic number.

12343787550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12343787550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17585436960).

12343787550 is an abundant number, since it is smaller than the sum of its proper divisors (22827086370).

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

12343787550 is a wasteful number, since it uses less digits than its factorization.

12343787550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627 (or 2619 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 12343787550 in words is "twelve billion, three hundred forty-three million, seven hundred eighty-seven thousand, five hundred fifty".