138146888467 has 16 divisors (see below), whose sum is σ = 158536228032. Its totient is φ = 117921300480.

The previous prime is 138146888443. The next prime is 138146888501. The reversal of 138146888467 is 764888641831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138146888467 is a prime.

It is a super-2 number, since 2×138146888467² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138146888399 and 138146888408.

It is not an unprimeable number, because it can be changed into a prime (138146888437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10141353 + ... + 10154965.

It is an arithmetic number, because the mean of its divisors is an integer number (9908514252).

Almost surely, 2^138146888467 is an apocalyptic number.

138146888467 is a deficient number, since it is larger than the sum of its proper divisors (20389339565).

138146888467 is a wasteful number, since it uses less digits than its factorization.

138146888467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19518.

The product of its digits is 49545216, while the sum is 64.

The spelling of 138146888467 in words is "one hundred thirty-eight billion, one hundred forty-six million, eight hundred eighty-eight thousand, four hundred sixty-seven".