137666139648 has 40 divisors (see below), whose sum is σ = 366751204248. Its totient is φ = 45888712704.

The previous prime is 137666139629. The next prime is 137666139661. The reversal of 137666139648 is 846931666731.

It is a junction number, because it is equal to n+sod(n) for n = 137666139591 and 137666139600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44811661 + ... + 44814732.

Almost surely, 2^137666139648 is an apocalyptic number.

It is an amenable number.

137666139648 is an abundant number, since it is smaller than the sum of its proper divisors (229085064600).

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

137666139648 is an frugal number, since it uses more digits than its factorization.

137666139648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89626414 (or 89626398 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 60.

The spelling of 137666139648 in words is "one hundred thirty-seven billion, six hundred sixty-six million, one hundred thirty-nine thousand, six hundred forty-eight".