10111330640 has 40 divisors (see below), whose sum is σ = 23521256448. Its totient is φ = 4042396800.

The previous prime is 10111330639. The next prime is 10111330657. The reversal of 10111330640 is 4603311101.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10111330640² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 123689 + ... + 188471.

Almost surely, 2^10111330640 is an apocalyptic number.

10111330640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111330640 is an abundant number, since it is smaller than the sum of its proper divisors (13409925808).

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

10111330640 is a wasteful number, since it uses less digits than its factorization.

10111330640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66747 (or 66741 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 10111330640 its reverse (4603311101), we get a palindrome (14714641741).

The spelling of 10111330640 in words is "ten billion, one hundred eleven million, three hundred thirty thousand, six hundred forty".