3871665665077 has 8 divisors (see below), whose sum is σ = 4424790888000. Its totient is φ = 3318547974144.

The previous prime is 3871665665027. The next prime is 3871665665107. The reversal of 3871665665077 is 7705665661783.

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

It is a cyclic number.

It is not a de Polignac number, because 3871665665077 - 2¹¹ = 3871665663029 is a prime.

It is a super-2 number, since 2×3871665665077² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871665665027) 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, 734827 + ... + 2878072.

It is an arithmetic number, because the mean of its divisors is an integer number (553098861000).

Almost surely, 2^{3871665665077} is an apocalyptic number.

It is an amenable number.

3871665665077 is a deficient number, since it is larger than the sum of its proper divisors (553125222923).

3871665665077 is a wasteful number, since it uses less digits than its factorization.

3871665665077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765995.

The product of its (nonzero) digits is 266716800, while the sum is 67.

The spelling of 3871665665077 in words is "three trillion, eight hundred seventy-one billion, six hundred sixty-five million, six hundred sixty-five thousand, seventy-seven".