137668004347 has 2 divisors, whose sum is σ = 137668004348. Its totient is φ = 137668004346.

The previous prime is 137668004321. The next prime is 137668004363. The reversal of 137668004347 is 743400866731.

It is a strong prime.

It is an emirp because it is prime and its reverse (743400866731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137668004347 is a prime.

It is a super-2 number, since 2×137668004347² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 137668004347.

It is not a weakly prime, because it can be changed into another prime (137668004647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68834002173 + 68834002174.

It is an arithmetic number, because the mean of its divisors is an integer number (68834002174).

Almost surely, 2^137668004347 is an apocalyptic number.

137668004347 is a deficient number, since it is larger than the sum of its proper divisors (1).

137668004347 is an equidigital number, since it uses as much as digits as its factorization.

137668004347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 137668004347 in words is "one hundred thirty-seven billion, six hundred sixty-eight million, four thousand, three hundred forty-seven".