12345661750 has 16 divisors (see below), whose sum is σ = 23111079264. Its totient is φ = 4938264600.

The previous prime is 12345661747. The next prime is 12345661753. The reversal of 12345661750 is 5716654321.

It is an interprime number because it is at equal distance from previous prime (12345661747) and next prime (12345661753).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345661753) 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 7 ways as a sum of consecutive naturals, for example, 24691074 + ... + 24691573.

It is an arithmetic number, because the mean of its divisors is an integer number (1444442454).

Almost surely, 2^12345661750 is an apocalyptic number.

12345661750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12345661750 is a deficient number, since it is larger than the sum of its proper divisors (10765417514).

12345661750 is an equidigital number, since it uses as much as digits as its factorization.

12345661750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49382664 (or 49382654 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 12345661750 in words is "twelve billion, three hundred forty-five million, six hundred sixty-one thousand, seven hundred fifty".