11165561140 has 24 divisors (see below), whose sum is σ = 24467143680. Its totient is φ = 4272040608.

The previous prime is 11165561129. The next prime is 11165561167. The reversal of 11165561140 is 4116556111.

It is a super-3 number, since 3×11165561140³ (a number of 31 digits) contains 333 as substring.

It is a congruent 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, 12136020 + ... + 12136939.

It is an arithmetic number, because the mean of its divisors is an integer number (1019464320).

Almost surely, 2^11165561140 is an apocalyptic number.

11165561140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11165561140 is an abundant number, since it is smaller than the sum of its proper divisors (13301582540).

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

11165561140 is a wasteful number, since it uses less digits than its factorization.

11165561140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24272991 (or 24272989 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The spelling of 11165561140 in words is "eleven billion, one hundred sixty-five million, five hundred sixty-one thousand, one hundred forty".