137785877618 has 16 divisors (see below), whose sum is σ = 207759448800. Its totient is φ = 68533046400.

The previous prime is 137785877609. The next prime is 137785877629. The reversal of 137785877618 is 816778587731.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799733 + ... + 956631.

It is an arithmetic number, because the mean of its divisors is an integer number (12984965550).

Almost surely, 2^137785877618 is an apocalyptic number.

137785877618 is a deficient number, since it is larger than the sum of its proper divisors (69973571182).

137785877618 is a wasteful number, since it uses less digits than its factorization.

137785877618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159193.

The product of its digits is 110638080, while the sum is 68.

The spelling of 137785877618 in words is "one hundred thirty-seven billion, seven hundred eighty-five million, eight hundred seventy-seven thousand, six hundred eighteen".