247705067040 has 48 divisors (see below), whose sum is σ = 780270962688. Its totient is φ = 66054684416.

The previous prime is 247705066933. The next prime is 247705067047. The reversal of 247705067040 is 40760507742.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×247705067040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247705066983 and 247705067001.

It is not an unprimeable number, because it can be changed into a prime (247705067047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258025632 + ... + 258026591.

It is an arithmetic number, because the mean of its divisors is an integer number (16255645056).

Almost surely, 2^247705067040 is an apocalyptic number.

247705067040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247705067040 is an abundant number, since it is smaller than the sum of its proper divisors (532565895648).

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

247705067040 is a wasteful number, since it uses less digits than its factorization.

247705067040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516052241 (or 516052233 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 247705067040 in words is "two hundred forty-seven billion, seven hundred five million, sixty-seven thousand, forty".