11455591355890 has 48 divisors (see below), whose sum is σ = 22927051135296. Its totient is φ = 4087071934400.

The previous prime is 11455591355869. The next prime is 11455591355909. The reversal of 11455591355890 is 9855319555411.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18228166 + ... + 18846145.

It is an arithmetic number, because the mean of its divisors is an integer number (477646898652).

Almost surely, 2^{11455591355890} is an apocalyptic number.

11455591355890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11455591355890 is an abundant number, since it is smaller than the sum of its proper divisors (11471459779406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11455591355890 is a wasteful number, since it uses less digits than its factorization.

11455591355890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37074435 (or 37074382 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 61.

The spelling of 11455591355890 in words is "eleven trillion, four hundred fifty-five billion, five hundred ninety-one million, three hundred fifty-five thousand, eight hundred ninety".