12345667790 has 16 divisors (see below), whose sum is σ = 22289344560. Its totient is φ = 4923346560.

The previous prime is 12345667787. The next prime is 12345667799. The reversal of 12345667790 is 9776654321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345667799) 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, 1861595 + ... + 1868214.

It is an arithmetic number, because the mean of its divisors is an integer number (1393084035).

Almost surely, 2^12345667790 is an apocalyptic number.

12345667790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12345667790 is a deficient number, since it is larger than the sum of its proper divisors (9943676770).

12345667790 is a wasteful number, since it uses less digits than its factorization.

12345667790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730147.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 12345667790 in words is "twelve billion, three hundred forty-five million, six hundred sixty-seven thousand, seven hundred ninety".