137425064818 has 4 divisors (see below), whose sum is σ = 206137597230. Its totient is φ = 68712532408.

The previous prime is 137425064813. The next prime is 137425064867. The reversal of 137425064818 is 818460524731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 125197791889 + 12227272929 = 353833^2 + 110577^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (137425064813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34356266203 + ... + 34356266206.

Almost surely, 2^137425064818 is an apocalyptic number.

137425064818 is a deficient number, since it is larger than the sum of its proper divisors (68712532412).

137425064818 is an equidigital number, since it uses as much as digits as its factorization.

137425064818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68712532411.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 137425064818 in words is "one hundred thirty-seven billion, four hundred twenty-five million, sixty-four thousand, eight hundred eighteen".