11421403403444 has 24 divisors (see below), whose sum is σ = 20424952047360. Its totient is φ = 5585848426656.

The previous prime is 11421403403429. The next prime is 11421403403453. The reversal of 11421403403444 is 44430430412411.

It is a super-2 number, since 2×11421403403444² (a number of 27 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 7 ways as a sum of consecutive naturals, for example, 17886392 + ... + 18513935.

It is an arithmetic number, because the mean of its divisors is an integer number (851039668640).

Almost surely, 2^{11421403403444} is an apocalyptic number.

It is an amenable number.

11421403403444 is a deficient number, since it is larger than the sum of its proper divisors (9003548643916).

11421403403444 is a wasteful number, since it uses less digits than its factorization.

11421403403444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36402047 (or 36402045 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 11421403403444 its reverse (44430430412411), we get a palindrome (55851833815855).

The spelling of 11421403403444 in words is "eleven trillion, four hundred twenty-one billion, four hundred three million, four hundred three thousand, four hundred forty-four".