137378065538 has 24 divisors (see below), whose sum is σ = 248552646912. Its totient is φ = 55777558392.

The previous prime is 137378065537. The next prime is 137378065541. The reversal of 137378065538 is 835560873731.

It is not an unprimeable number, because it can be changed into a prime (137378065537) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 13585970 + ... + 13596077.

It is an arithmetic number, because the mean of its divisors is an integer number (10356360288).

Almost surely, 2^137378065538 is an apocalyptic number.

137378065538 is a deficient number, since it is larger than the sum of its proper divisors (111174581374).

137378065538 is a wasteful number, since it uses less digits than its factorization.

137378065538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27182094 (or 27182075 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 137378065538 in words is "one hundred thirty-seven billion, three hundred seventy-eight million, sixty-five thousand, five hundred thirty-eight".