138260289867 has 32 divisors (see below), whose sum is σ = 218807769600. Its totient is φ = 76006833408.

The previous prime is 138260289851. The next prime is 138260289889. The reversal of 138260289867 is 768982062831.

It is not a de Polignac number, because 138260289867 - 2⁴ = 138260289851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138260289867.

It is not an unprimeable number, because it can be changed into a prime (138260289067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 930517 + ... + 1068822.

It is an arithmetic number, because the mean of its divisors is an integer number (6837742800).

Almost surely, 2^138260289867 is an apocalyptic number.

138260289867 is a deficient number, since it is larger than the sum of its proper divisors (80547479733).

138260289867 is a wasteful number, since it uses less digits than its factorization.

138260289867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999475.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 138260289867 in words is "one hundred thirty-eight billion, two hundred sixty million, two hundred eighty-nine thousand, eight hundred sixty-seven".