247242118047 has 4 divisors (see below), whose sum is σ = 329656157400. Its totient is φ = 164828078696.

The previous prime is 247242118021. The next prime is 247242118049. The reversal of 247242118047 is 740811242742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 247242118047 - 2⁸ = 247242117791 is a prime.

It is a super-2 number, since 2×247242118047² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247242118049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41207019672 + ... + 41207019677.

It is an arithmetic number, because the mean of its divisors is an integer number (82414039350).

Almost surely, 2^247242118047 is an apocalyptic number.

247242118047 is a deficient number, since it is larger than the sum of its proper divisors (82414039353).

247242118047 is an equidigital number, since it uses as much as digits as its factorization.

247242118047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82414039352.

The product of its (nonzero) digits is 200704, while the sum is 42.

The spelling of 247242118047 in words is "two hundred forty-seven billion, two hundred forty-two million, one hundred eighteen thousand, forty-seven".