1223455566790 has 32 divisors (see below), whose sum is σ = 2278011083040. Its totient is φ = 472730079744.

The previous prime is 1223455566787. The next prime is 1223455566793. The reversal of 1223455566790 is 976655543221.

It is an interprime number because it is at equal distance from previous prime (1223455566787) and next prime (1223455566793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223455566793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11842947 + ... + 11945806.

It is an arithmetic number, because the mean of its divisors is an integer number (71187846345).

Almost surely, 2^{1223455566790} is an apocalyptic number.

1223455566790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223455566790 is a deficient number, since it is larger than the sum of its proper divisors (1054555516250).

1223455566790 is a wasteful number, since it uses less digits than its factorization.

1223455566790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23788936.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 1223455566790 in words is "one trillion, two hundred twenty-three billion, four hundred fifty-five million, five hundred sixty-six thousand, seven hundred ninety".