138669762867 has 32 divisors (see below), whose sum is σ = 191570903040. Its totient is φ = 89130512160.

The previous prime is 138669762863. The next prime is 138669762883. The reversal of 138669762867 is 768267966831.

It is not a de Polignac number, because 138669762867 - 2² = 138669762863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138669762863) 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, 33598558 + ... + 33602684.

It is an arithmetic number, because the mean of its divisors is an integer number (5986590720).

Almost surely, 2^138669762867 is an apocalyptic number.

138669762867 is a deficient number, since it is larger than the sum of its proper divisors (52901140173).

138669762867 is a wasteful number, since it uses less digits than its factorization.

138669762867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423.

The product of its digits is 219469824, while the sum is 69.

The spelling of 138669762867 in words is "one hundred thirty-eight billion, six hundred sixty-nine million, seven hundred sixty-two thousand, eight hundred sixty-seven".