2171356141777 has 16 divisors (see below), whose sum is σ = 2236538352384. Its totient is φ = 2106784080000.

The previous prime is 2171356141753. The next prime is 2171356141811. The reversal of 2171356141777 is 7771416531712.

It is a cyclic number.

It is not a de Polignac number, because 2171356141777 - 2¹⁹ = 2171355617489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171356141727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6013402 + ... + 6364252.

It is an arithmetic number, because the mean of its divisors is an integer number (139783647024).

Almost surely, 2^{2171356141777} is an apocalyptic number.

It is an amenable number.

2171356141777 is a deficient number, since it is larger than the sum of its proper divisors (65182210607).

2171356141777 is a wasteful number, since it uses less digits than its factorization.

2171356141777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351720.

The product of its digits is 1728720, while the sum is 52.

The spelling of 2171356141777 in words is "two trillion, one hundred seventy-one billion, three hundred fifty-six million, one hundred forty-one thousand, seven hundred seventy-seven".