1234456677890 has 32 divisors (see below), whose sum is σ = 2232181950336. Its totient is φ = 491526094720.

The previous prime is 1234456677877. The next prime is 1234456677893. The reversal of 1234456677890 is 987766544321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1234456677893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8481269 + ... + 8625591.

It is an arithmetic number, because the mean of its divisors is an integer number (69755685948).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1234456677890 = 2468913355780, but 3⋅1234456677890 = 3703370033670 is not.

Almost surely, 2^{1234456677890} is an apocalyptic number.

1234456677890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1234456677890 is a deficient number, since it is larger than the sum of its proper divisors (997725272446).

1234456677890 is a wasteful number, since it uses less digits than its factorization.

1234456677890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148234.

The product of its (nonzero) digits is 60963840, while the sum is 62.

The spelling of 1234456677890 in words is "one trillion, two hundred thirty-four billion, four hundred fifty-six million, six hundred seventy-seven thousand, eight hundred ninety".