11311402544 has 60 divisors (see below), whose sum is σ = 24980488200. Its totient is φ = 4945853952.

The previous prime is 11311402519. The next prime is 11311402549. The reversal of 11311402544 is 44520411311.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (11311402549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58709 + ... + 161460.

It is an arithmetic number, because the mean of its divisors is an integer number (416341470).

Almost surely, 2^11311402544 is an apocalyptic number.

It is an amenable number.

11311402544 is an abundant number, since it is smaller than the sum of its proper divisors (13669085656).

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

11311402544 is a wasteful number, since it uses less digits than its factorization.

11311402544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220222 (or 220203 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 11311402544 its reverse (44520411311), we get a palindrome (55831813855).

The spelling of 11311402544 in words is "eleven billion, three hundred eleven million, four hundred two thousand, five hundred forty-four".