137519705666 has 16 divisors (see below), whose sum is σ = 236501263104. Its totient is φ = 58748717664.

The previous prime is 137519705623. The next prime is 137519705689. The reversal of 137519705666 is 666507915731.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 15687050 + ... + 15695813.

It is an arithmetic number, because the mean of its divisors is an integer number (14781328944).

Almost surely, 2^137519705666 is an apocalyptic number.

137519705666 is a deficient number, since it is larger than the sum of its proper divisors (98981557438).

137519705666 is a wasteful number, since it uses less digits than its factorization.

137519705666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31383185.

The product of its (nonzero) digits is 7144200, while the sum is 56.

The spelling of 137519705666 in words is "one hundred thirty-seven billion, five hundred nineteen million, seven hundred five thousand, six hundred sixty-six".