66135624343165 has 96 divisors (see below), whose sum is σ = 87271600711680. Its totient is φ = 48086456371200.

The previous prime is 66135624343111. The next prime is 66135624343219. The reversal of 66135624343165 is 56134342653166.

It is an interprime number because it is at equal distance from previous prime (66135624343111) and next prime (66135624343219).

It is not a de Polignac number, because 66135624343165 - 2¹³ = 66135624334973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27637117209 + ... + 27637119601.

It is an arithmetic number, because the mean of its divisors is an integer number (909079174080).

Almost surely, 2^{66135624343165} is an apocalyptic number.

66135624343165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66135624343165 is a deficient number, since it is larger than the sum of its proper divisors (21135976368515).

66135624343165 is a wasteful number, since it uses less digits than its factorization.

66135624343165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295 (or 4282 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 55.

The spelling of 66135624343165 in words is "sixty-six trillion, one hundred thirty-five billion, six hundred twenty-four million, three hundred forty-three thousand, one hundred sixty-five".