1234455567890 has 16 divisors (see below), whose sum is σ = 2222073580608. Its totient is φ = 493770325296.

The previous prime is 1234455567887. The next prime is 1234455567929. The reversal of 1234455567890 is 987655544321.

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, 1045862 + ... + 1887521.

It is an arithmetic number, because the mean of its divisors is an integer number (138879598788).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1234455567890 = 2468911135780, but 3⋅1234455567890 = 3703366703670 is not.

Almost surely, 2^{1234455567890} is an apocalyptic number.

1234455567890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1234455567890 is a deficient number, since it is larger than the sum of its proper divisors (987618012718).

1234455567890 is a wasteful number, since it uses less digits than its factorization.

1234455567890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975473.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 1234455567890 in words is "one trillion, two hundred thirty-four billion, four hundred fifty-five million, five hundred sixty-seven thousand, eight hundred ninety".