3871620464065 has 8 divisors (see below), whose sum is σ = 4648350547008. Its totient is φ = 3095692377840.

The previous prime is 3871620464053. The next prime is 3871620464099. The reversal of 3871620464065 is 5604640261783.

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

It is not a de Polignac number, because 3871620464065 - 2¹³ = 3871620455873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200488557 + ... + 200507866.

It is an arithmetic number, because the mean of its divisors is an integer number (581043818376).

Almost surely, 2^{3871620464065} is an apocalyptic number.

It is an amenable number.

3871620464065 is a deficient number, since it is larger than the sum of its proper divisors (776730082943).

3871620464065 is a wasteful number, since it uses less digits than its factorization.

3871620464065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400998359.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 3871620464065 in words is "three trillion, eight hundred seventy-one billion, six hundred twenty million, four hundred sixty-four thousand, sixty-five".