11643421542140 has 12 divisors (see below), whose sum is σ = 24451185238536. Its totient is φ = 4657368616848.

The previous prime is 11643421542133. The next prime is 11643421542143. The reversal of 11643421542140 is 4124512434611.

It is a junction number, because it is equal to n+sod(n) for n = 11643421542094 and 11643421542103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643421542143) 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, 291085538534 + ... + 291085538573.

It is an arithmetic number, because the mean of its divisors is an integer number (2037598769878).

Almost surely, 2^{11643421542140} is an apocalyptic number.

11643421542140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11643421542140 is an abundant number, since it is smaller than the sum of its proper divisors (12807763696396).

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

11643421542140 is a wasteful number, since it uses less digits than its factorization.

11643421542140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582171077116 (or 582171077114 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

Adding to 11643421542140 its reverse (4124512434611), we get a palindrome (15767933976751).

The spelling of 11643421542140 in words is "eleven trillion, six hundred forty-three billion, four hundred twenty-one million, five hundred forty-two thousand, one hundred forty".