247338083666 has 16 divisors (see below), whose sum is σ = 372888479040. Its totient is φ = 123042311280.

The previous prime is 247338083621. The next prime is 247338083669. The reversal of 247338083666 is 666380833742.

It is a super-2 number, since 2×247338083666² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247338083669) 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, 1204160 + ... + 1394516.

It is an arithmetic number, because the mean of its divisors is an integer number (23305529940).

Almost surely, 2^247338083666 is an apocalyptic number.

247338083666 is a deficient number, since it is larger than the sum of its proper divisors (125550395374).

247338083666 is a wasteful number, since it uses less digits than its factorization.

247338083666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193649.

The product of its (nonzero) digits is 20901888, while the sum is 56.

The spelling of 247338083666 in words is "two hundred forty-seven billion, three hundred thirty-eight million, eighty-three thousand, six hundred sixty-six".