247317812742 has 64 divisors (see below), whose sum is σ = 664126170624. Its totient is φ = 59296976640.

The previous prime is 247317812723. The next prime is 247317812747. The reversal of 247317812742 is 247218713742.

247317812742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247317812742² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247317812691 and 247317812700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247317812747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20583223 + ... + 20595234.

It is an arithmetic number, because the mean of its divisors is an integer number (10376971416).

Almost surely, 2^247317812742 is an apocalyptic number.

247317812742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

247317812742 is an abundant number, since it is smaller than the sum of its proper divisors (416808357882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247317812742 is a wasteful number, since it uses less digits than its factorization.

247317812742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41178493.

The product of its digits is 1053696, while the sum is 48.

The spelling of 247317812742 in words is "two hundred forty-seven billion, three hundred seventeen million, eight hundred twelve thousand, seven hundred forty-two".