11581416890 has 16 divisors (see below), whose sum is σ = 20866180608. Its totient is φ = 4628204496.

The previous prime is 11581416881. The next prime is 11581416943. The reversal of 11581416890 is 9861418511.

It is a Curzon number.

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, 534122 + ... + 555381.

It is an arithmetic number, because the mean of its divisors is an integer number (1304136288).

Almost surely, 2^11581416890 is an apocalyptic number.

11581416890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11581416890 is a deficient number, since it is larger than the sum of its proper divisors (9284763718).

11581416890 is a wasteful number, since it uses less digits than its factorization.

11581416890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090573.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 11581416890 in words is "eleven billion, five hundred eighty-one million, four hundred sixteen thousand, eight hundred ninety".