11561341401 has 24 divisors (see below), whose sum is σ = 17303232960. Its totient is φ = 7433945376.

The previous prime is 11561341397. The next prime is 11561341423. The reversal of 11561341401 is 10414316511.

11561341401 is a `hidden beast` number, since 1 + 1 + 5 + 613 + 4 + 1 + 40 + 1 = 666.

It is not a de Polignac number, because 11561341401 - 2² = 11561341397 is a prime.

It is a super-2 number, since 2×11561341401² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11561341471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177261 + ... + 233546.

It is an arithmetic number, because the mean of its divisors is an integer number (720968040).

Almost surely, 2^11561341401 is an apocalyptic number.

It is an amenable number.

11561341401 is a deficient number, since it is larger than the sum of its proper divisors (5741891559).

11561341401 is a wasteful number, since it uses less digits than its factorization.

11561341401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410925 (or 410922 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 11561341401 its reverse (10414316511), we get a palindrome (21975657912).

The spelling of 11561341401 in words is "eleven billion, five hundred sixty-one million, three hundred forty-one thousand, four hundred one".