11401219287 has 16 divisors (see below), whose sum is σ = 17779680000. Its totient is φ = 7200769752.

The previous prime is 11401219237. The next prime is 11401219307. The reversal of 11401219287 is 78291210411.

11401219287 is a `hidden beast` number, since 11 + 401 + 219 + 28 + 7 = 666.

It is not a de Polignac number, because 11401219287 - 2²⁰ = 11400170711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401219237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11111787 + ... + 11112812.

It is an arithmetic number, because the mean of its divisors is an integer number (1111230000).

Almost surely, 2^11401219287 is an apocalyptic number.

11401219287 is a deficient number, since it is larger than the sum of its proper divisors (6378460713).

11401219287 is a wasteful number, since it uses less digits than its factorization.

11401219287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22224627 (or 22224621 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

Adding to 11401219287 its reverse (78291210411), we get a palindrome (89692429698).

The spelling of 11401219287 in words is "eleven billion, four hundred one million, two hundred nineteen thousand, two hundred eighty-seven".