13444578890 has 32 divisors (see below), whose sum is σ = 24946216704. Its totient is φ = 5214199360.

The previous prime is 13444578857. The next prime is 13444578893. The reversal of 13444578890 is 9887544431.

It is not an unprimeable number, because it can be changed into a prime (13444578893) 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, 83381 + ... + 183960.

It is an arithmetic number, because the mean of its divisors is an integer number (779569272).

Almost surely, 2^13444578890 is an apocalyptic number.

13444578890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13444578890 is a deficient number, since it is larger than the sum of its proper divisors (11501637814).

13444578890 is a wasteful number, since it uses less digits than its factorization.

13444578890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267502.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 13444578890 in words is "thirteen billion, four hundred forty-four million, five hundred seventy-eight thousand, eight hundred ninety".