138669762806 has 16 divisors (see below), whose sum is σ = 217301651424. Its totient is φ = 66242915904.

The previous prime is 138669762797. The next prime is 138669762839. The reversal of 138669762806 is 608267966831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1719365 + ... + 1798208.

It is an arithmetic number, because the mean of its divisors is an integer number (13581353214).

Almost surely, 2^138669762806 is an apocalyptic number.

138669762806 is a deficient number, since it is larger than the sum of its proper divisors (78631888618).

138669762806 is a wasteful number, since it uses less digits than its factorization.

138669762806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518455.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 138669762806 in words is "one hundred thirty-eight billion, six hundred sixty-nine million, seven hundred sixty-two thousand, eight hundred six".