11170185640 has 16 divisors (see below), whose sum is σ = 25132917780. Its totient is φ = 4468074240.

The previous prime is 11170185629. The next prime is 11170185643. The reversal of 11170185640 is 4658107111.

It can be written as a sum of positive squares in 2 ways, for example, as 11161077316 + 9108324 = 105646^2 + 3018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11170185596 and 11170185605.

It is not an unprimeable number, because it can be changed into a prime (11170185643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139627281 + ... + 139627360.

Almost surely, 2^11170185640 is an apocalyptic number.

11170185640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11170185640 is an abundant number, since it is smaller than the sum of its proper divisors (13962732140).

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

11170185640 is a wasteful number, since it uses less digits than its factorization.

11170185640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279254652 (or 279254648 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 34.

The spelling of 11170185640 in words is "eleven billion, one hundred seventy million, one hundred eighty-five thousand, six hundred forty".