11111401251005 has 24 divisors (see below), whose sum is σ = 14657104573272. Its totient is φ = 8080426640000.

The previous prime is 11111401250987. The next prime is 11111401251023. The reversal of 11111401251005 is 50015210411111.

It is an interprime number because it is at equal distance from previous prime (11111401250987) and next prime (11111401251023).

It can be written as a sum of positive squares in 4 ways, for example, as 4206756877444 + 6904644373561 = 2051038^2 + 2627669^2 .

It is not a de Polignac number, because 11111401251005 - 2²² = 11111397056701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7671155 + ... + 9003855.

It is an arithmetic number, because the mean of its divisors is an integer number (610712690553).

Almost surely, 2^{11111401251005} is an apocalyptic number.

It is an amenable number.

11111401251005 is a deficient number, since it is larger than the sum of its proper divisors (3545703322267).

11111401251005 is a wasteful number, since it uses less digits than its factorization.

11111401251005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346509 (or 1346498 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 23.

Adding to 11111401251005 its reverse (50015210411111), we get a palindrome (61126611662116).

The spelling of 11111401251005 in words is "eleven trillion, one hundred eleven billion, four hundred one million, two hundred fifty-one thousand, five".