11565424551131 has 8 divisors (see below), whose sum is σ = 13358993064624. Its totient is φ = 9895550417920.

The previous prime is 11565424551041. The next prime is 11565424551139. The reversal of 11565424551131 is 13115542456511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11565424551131 is a prime.

It is a super-2 number, since 2×11565424551131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11565424551139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30923594870 + ... + 30923595243.

It is an arithmetic number, because the mean of its divisors is an integer number (1669874133078).

Almost surely, 2^{11565424551131} is an apocalyptic number.

11565424551131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11565424551131 is a deficient number, since it is larger than the sum of its proper divisors (1793568513493).

11565424551131 is a wasteful number, since it uses less digits than its factorization.

11565424551131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61847190141.

The product of its digits is 360000, while the sum is 44.

The spelling of 11565424551131 in words is "eleven trillion, five hundred sixty-five billion, four hundred twenty-four million, five hundred fifty-one thousand, one hundred thirty-one".