11640213134 has 32 divisors (see below), whose sum is σ = 19286332416. Its totient is φ = 5224986720.

The previous prime is 11640213127. The next prime is 11640213149. The reversal of 11640213134 is 43131204611.

It is a happy number.

It is a super-2 number, since 2×11640213134² (a number of 21 digits) contains 22 as substring.

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, 824624 + ... + 838620.

It is an arithmetic number, because the mean of its divisors is an integer number (602697888).

Almost surely, 2^11640213134 is an apocalyptic number.

11640213134 is a deficient number, since it is larger than the sum of its proper divisors (7646119282).

11640213134 is a wasteful number, since it uses less digits than its factorization.

11640213134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 11640213134 its reverse (43131204611), we get a palindrome (54771417745).

The spelling of 11640213134 in words is "eleven billion, six hundred forty million, two hundred thirteen thousand, one hundred thirty-four".