247429826768 has 20 divisors (see below), whose sum is σ = 495926162340. Its totient is φ = 119448881664.

The previous prime is 247429826767. The next prime is 247429826779. The reversal of 247429826768 is 867628924742.

It can be written as a sum of positive squares in 2 ways, for example, as 80776460944 + 166653365824 = 284212^2 + 408232^2 .

It is a super-2 number, since 2×247429826768² (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 (247429826767) 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, 266626505 + ... + 266627432.

It is an arithmetic number, because the mean of its divisors is an integer number (24796308117).

Almost surely, 2^247429826768 is an apocalyptic number.

It is an amenable number.

247429826768 is an abundant number, since it is smaller than the sum of its proper divisors (248496335572).

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

247429826768 is a wasteful number, since it uses less digits than its factorization.

247429826768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533253974 (or 533253968 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 65.

The spelling of 247429826768 in words is "two hundred forty-seven billion, four hundred twenty-nine million, eight hundred twenty-six thousand, seven hundred sixty-eight".