42847155738247 has 16 divisors (see below), whose sum is σ = 50644446472192. Its totient is φ = 35473462587360.

The previous prime is 42847155738181. The next prime is 42847155738251. The reversal of 42847155738247 is 74283755174824.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-42847155738247 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 (42847155732247) 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, 188655468 + ... + 188882449.

It is an arithmetic number, because the mean of its divisors is an integer number (3165277904512).

Almost surely, 2^{42847155738247} is an apocalyptic number.

42847155738247 is a deficient number, since it is larger than the sum of its proper divisors (7797290733945).

42847155738247 is a wasteful number, since it uses less digits than its factorization.

42847155738247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377538478.

The product of its digits is 421478400, while the sum is 67.

The spelling of 42847155738247 in words is "forty-two trillion, eight hundred forty-seven billion, one hundred fifty-five million, seven hundred thirty-eight thousand, two hundred forty-seven".