11809145090 has 8 divisors (see below), whose sum is σ = 21256461180. Its totient is φ = 4723658032.

The previous prime is 11809145087. The next prime is 11809145113. The reversal of 11809145090 is 9054190811.

It can be written as a sum of positive squares in 2 ways, for example, as 10578328201 + 1230816889 = 102851^2 + 35083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11809145090² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590457245 + ... + 590457264.

Almost surely, 2^11809145090 is an apocalyptic number.

11809145090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11809145090 is a deficient number, since it is larger than the sum of its proper divisors (9447316090).

11809145090 is a wasteful number, since it uses less digits than its factorization.

11809145090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180914516.

The product of its (nonzero) digits is 12960, while the sum is 38.

The spelling of 11809145090 in words is "eleven billion, eight hundred nine million, one hundred forty-five thousand, ninety".