11753971865985 has 16 divisors (see below), whose sum is σ = 18982115315136. Its totient is φ = 6210198218688.

The previous prime is 11753971865957. The next prime is 11753971866019. The reversal of 11753971865985 is 58956817935711.

It is not a de Polignac number, because 11753971865985 - 2¹⁸ = 11753971603841 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3661671874 + ... + 3661675083.

It is an arithmetic number, because the mean of its divisors is an integer number (1186382207196).

Almost surely, 2^{11753971865985} is an apocalyptic number.

11753971865985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11753971865985 is a deficient number, since it is larger than the sum of its proper divisors (7228143449151).

11753971865985 is a wasteful number, since it uses less digits than its factorization.

11753971865985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7323347072.

The product of its digits is 571536000, while the sum is 75.

The spelling of 11753971865985 in words is "eleven trillion, seven hundred fifty-three billion, nine hundred seventy-one million, eight hundred sixty-five thousand, nine hundred eighty-five".