11801065590 has 48 divisors (see below), whose sum is σ = 30999110688. Its totient is φ = 3114505728.

The previous prime is 11801065553. The next prime is 11801065597. The reversal of 11801065590 is 9556010811.

11801065590 is a `hidden beast` number, since 1 + 1 + 8 + 0 + 1 + 0 + 65 + 590 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801065597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 667162 + ... + 684621.

It is an arithmetic number, because the mean of its divisors is an integer number (645814806).

Almost surely, 2^11801065590 is an apocalyptic number.

11801065590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11801065590 is an abundant number, since it is smaller than the sum of its proper divisors (19198045098).

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

11801065590 is a wasteful number, since it uses less digits than its factorization.

11801065590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351893 (or 1351890 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 36.

The spelling of 11801065590 in words is "eleven billion, eight hundred one million, sixty-five thousand, five hundred ninety".