1234566678890 has 16 divisors (see below), whose sum is σ = 2222236874880. Its totient is φ = 493822926480.

The previous prime is 1234566678869. The next prime is 1234566678931. The reversal of 1234566678890 is 988766654321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199171 + ... + 1976649.

It is an arithmetic number, because the mean of its divisors is an integer number (138889804680).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1234566678890 = 2469133357780, but 3⋅1234566678890 = 3703700036670 is not.

Almost surely, 2^{1234566678890} is an apocalyptic number.

1234566678890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1234566678890 is a deficient number, since it is larger than the sum of its proper divisors (987670195990).

1234566678890 is a wasteful number, since it uses less digits than its factorization.

1234566678890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936277.

The product of its (nonzero) digits is 104509440, while the sum is 65.

The spelling of 1234566678890 in words is "one trillion, two hundred thirty-four billion, five hundred sixty-six million, six hundred seventy-eight thousand, eight hundred ninety".