3891715656141 has 16 divisors (see below), whose sum is σ = 5239880530560. Its totient is φ = 2569019213760.

The previous prime is 3891715656107. The next prime is 3891715656151. The reversal of 3891715656141 is 1416565171983.

It is not a de Polignac number, because 3891715656141 - 2⁹ = 3891715655629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891715656151) 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 15 ways as a sum of consecutive naturals, for example, 2321371 + ... + 3629351.

It is an arithmetic number, because the mean of its divisors is an integer number (327492533160).

Almost surely, 2^{3891715656141} is an apocalyptic number.

It is an amenable number.

3891715656141 is a deficient number, since it is larger than the sum of its proper divisors (1348164874419).

3891715656141 is a wasteful number, since it uses less digits than its factorization.

3891715656141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317716.

The product of its digits is 5443200, while the sum is 57.

The spelling of 3891715656141 in words is "three trillion, eight hundred ninety-one billion, seven hundred fifteen million, six hundred fifty-six thousand, one hundred forty-one".