2171243479743 has 48 divisors (see below), whose sum is σ = 3389273072640. Its totient is φ = 1331493613632.

The previous prime is 2171243479721. The next prime is 2171243479787. The reversal of 2171243479743 is 3479743421712.

2171243479743 is a `hidden beast` number, since 2 + 1 + 7 + 124 + 3 + 479 + 7 + 43 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2171243479743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2171243479743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171243479043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62441080 + ... + 62475842.

It is an arithmetic number, because the mean of its divisors is an integer number (70609855680).

Almost surely, 2^{2171243479743} is an apocalyptic number.

2171243479743 is a deficient number, since it is larger than the sum of its proper divisors (1218029592897).

2171243479743 is a wasteful number, since it uses less digits than its factorization.

2171243479743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36628 (or 36625 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 2171243479743 in words is "two trillion, one hundred seventy-one billion, two hundred forty-three million, four hundred seventy-nine thousand, seven hundred forty-three".