137643505208 has 32 divisors (see below), whose sum is σ = 281961995760. Its totient is φ = 62472238080.

The previous prime is 137643505189. The next prime is 137643505231. The reversal of 137643505208 is 802505346731.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102835 + ... + 1221282.

Almost surely, 2^137643505208 is an apocalyptic number.

It is an amenable number.

137643505208 is an abundant number, since it is smaller than the sum of its proper divisors (144318490552).

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

137643505208 is a wasteful number, since it uses less digits than its factorization.

137643505208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324807 (or 2324803 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 137643505208 in words is "one hundred thirty-seven billion, six hundred forty-three million, five hundred five thousand, two hundred eight".