137155565968 has 10 divisors (see below), whose sum is σ = 265738909094. Its totient is φ = 68577782976.

The previous prime is 137155565947. The next prime is 137155565977. The reversal of 137155565968 is 869565551731.

It can be written as a sum of positive squares in only one way, i.e., 101755896064 + 35399669904 = 318992^2 + 188148^2 .

It is an unprimeable number.

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, 4286111421 + ... + 4286111452.

Almost surely, 2^137155565968 is an apocalyptic number.

It is an amenable number.

137155565968 is a deficient number, since it is larger than the sum of its proper divisors (128583343126).

137155565968 is an equidigital number, since it uses as much as digits as its factorization.

137155565968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572222881 (or 8572222875 counting only the distinct ones).

The product of its digits is 34020000, while the sum is 61.

The spelling of 137155565968 in words is "one hundred thirty-seven billion, one hundred fifty-five million, five hundred sixty-five thousand, nine hundred sixty-eight".