3895056616591 has 6 divisors (see below), whose sum is σ = 4530984227520. Its totient is φ = 3338619957036.

The previous prime is 3895056616519. The next prime is 3895056616597. The reversal of 3895056616591 is 1956166505983.

It is not a de Polignac number, because 3895056616591 - 2¹¹ = 3895056614543 is a prime.

It is a super-2 number, since 2×3895056616591² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3895056616597) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39745475631 + ... + 39745475728.

It is an arithmetic number, because the mean of its divisors is an integer number (755164037920).

Almost surely, 2^{3895056616591} is an apocalyptic number.

3895056616591 is a deficient number, since it is larger than the sum of its proper divisors (635927610929).

3895056616591 is an equidigital number, since it uses as much as digits as its factorization.

3895056616591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79490951373 (or 79490951366 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 64.

The spelling of 3895056616591 in words is "three trillion, eight hundred ninety-five billion, fifty-six million, six hundred sixteen thousand, five hundred ninety-one".