11531065642366 has 32 divisors (see below), whose sum is σ = 17759399288832. Its totient is φ = 5612590062240.

The previous prime is 11531065642289. The next prime is 11531065642399. The reversal of 11531065642366 is 66324656013511.

It is a super-2 number, since 2×11531065642366² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 154313185 + ... + 154387891.

It is an arithmetic number, because the mean of its divisors is an integer number (554981227776).

Almost surely, 2^{11531065642366} is an apocalyptic number.

11531065642366 is a deficient number, since it is larger than the sum of its proper divisors (6228333646466).

11531065642366 is a wasteful number, since it uses less digits than its factorization.

11531065642366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83544.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 11531065642366 in words is "eleven trillion, five hundred thirty-one billion, sixty-five million, six hundred forty-two thousand, three hundred sixty-six".