12347108981550 has 864 divisors, whose sum is σ = 41677087093920. Its totient is φ = 2678054400000.

The previous prime is 12347108981497. The next prime is 12347108981573. The reversal of 12347108981550 is 5518980174321.

12347108981550 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 7 + 1 + 0 + 8 + 9 + 81 + 550 = 666.

It is a super-2 number, since 2×12347108981550² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 4114330050 + ... + 4114333050.

Almost surely, 2^{12347108981550} is an apocalyptic number.

12347108981550 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 12347108981550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20838543546960).

12347108981550 is an abundant number, since it is smaller than the sum of its proper divisors (29329978112370).

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

12347108981550 is a wasteful number, since it uses less digits than its factorization.

12347108981550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3096 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 12347108981550 in words is "twelve trillion, three hundred forty-seven billion, one hundred eight million, nine hundred eighty-one thousand, five hundred fifty".