11013640240 has 20 divisors (see below), whose sum is σ = 25606713744. Its totient is φ = 4405456064.

The previous prime is 11013640223. The next prime is 11013640283. The reversal of 11013640240 is 4204631011.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×11013640240² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68835172 + ... + 68835331.

Almost surely, 2^11013640240 is an apocalyptic number.

11013640240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11013640240 is an abundant number, since it is smaller than the sum of its proper divisors (14593073504).

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

11013640240 is a wasteful number, since it uses less digits than its factorization.

11013640240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137670516 (or 137670510 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 11013640240 in words is "eleven billion, thirteen million, six hundred forty thousand, two hundred forty".