42647045547871 has 16 divisors (see below), whose sum is σ = 43787617147008. Its totient is φ = 41511274905600.

The previous prime is 42647045547859. The next prime is 42647045547889. The reversal of 42647045547871 is 17874554074624.

It is a cyclic number.

It is not a de Polignac number, because 42647045547871 - 2²¹ = 42647043450719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42647045547811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177375466 + ... + 177615736.

It is an arithmetic number, because the mean of its divisors is an integer number (2736726071688).

Almost surely, 2^{42647045547871} is an apocalyptic number.

42647045547871 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42647045547871 is a deficient number, since it is larger than the sum of its proper divisors (1140571599137).

42647045547871 is a wasteful number, since it uses less digits than its factorization.

42647045547871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250242.

The product of its (nonzero) digits is 210739200, while the sum is 64.

The spelling of 42647045547871 in words is "forty-two trillion, six hundred forty-seven billion, forty-five million, five hundred forty-seven thousand, eight hundred seventy-one".