1371665166736 has 20 divisors (see below), whose sum is σ = 2662271930700. Its totient is φ = 684627249152.

The previous prime is 1371665166727. The next prime is 1371665166757. The reversal of 1371665166736 is 6376615661731.

It can be written as a sum of positive squares in 2 ways, for example, as 294544998400 + 1077120168336 = 542720^2 + 1037844^2 .

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 3 ways as a sum of consecutive naturals, for example, 75324001 + ... + 75342208.

It is an arithmetic number, because the mean of its divisors is an integer number (133113596535).

Almost surely, 2^{1371665166736} is an apocalyptic number.

1371665166736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1371665166736 is a deficient number, since it is larger than the sum of its proper divisors (1290606763964).

1371665166736 is a wasteful number, since it uses less digits than its factorization.

1371665166736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150666786 (or 150666780 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 58.

The spelling of 1371665166736 in words is "one trillion, three hundred seventy-one billion, six hundred sixty-five million, one hundred sixty-six thousand, seven hundred thirty-six".