137640137650 has 12 divisors (see below), whose sum is σ = 256010656122. Its totient is φ = 55056055040.

The previous prime is 137640137633. The next prime is 137640137669. The reversal of 137640137650 is 56731046731.

It can be written as a sum of positive squares in 3 ways, for example, as 79962831729 + 57677305921 = 282777^2 + 240161^2 .

It is a junction number, because it is equal to n+sod(n) for n = 137640137597 and 137640137606.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1376401327 + ... + 1376401426.

Almost surely, 2^137640137650 is an apocalyptic number.

137640137650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137640137650 is a deficient number, since it is larger than the sum of its proper divisors (118370518472).

137640137650 is a wasteful number, since it uses less digits than its factorization.

137640137650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752802765 (or 2752802760 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 137640137650 in words is "one hundred thirty-seven billion, six hundred forty million, one hundred thirty-seven thousand, six hundred fifty".