11142111640 has 64 divisors (see below), whose sum is σ = 27455513760. Its totient is φ = 4035870720.

The previous prime is 11142111611. The next prime is 11142111653. The reversal of 11142111640 is 4611124111.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63814 + ... + 162346.

Almost surely, 2^11142111640 is an apocalyptic number.

11142111640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11142111640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13727756880).

11142111640 is an abundant number, since it is smaller than the sum of its proper divisors (16313402120).

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

11142111640 is a wasteful number, since it uses less digits than its factorization.

11142111640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98812 (or 98808 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 11142111640 its reverse (4611124111), we get a palindrome (15753235751).

The spelling of 11142111640 in words is "eleven billion, one hundred forty-two million, one hundred eleven thousand, six hundred forty".