138069677670 has 64 divisors (see below), whose sum is σ = 351301349376. Its totient is φ = 34667879040.

The previous prime is 138069677617. The next prime is 138069677671. The reversal of 138069677670 is 76776960831.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138069677671) 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, 1971834 + ... + 2040653.

It is an arithmetic number, because the mean of its divisors is an integer number (5489083584).

Almost surely, 2^138069677670 is an apocalyptic number.

138069677670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138069677670 is an abundant number, since it is smaller than the sum of its proper divisors (213231671706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138069677670 is a wasteful number, since it uses less digits than its factorization.

138069677670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012565.

The product of its (nonzero) digits is 16003008, while the sum is 60.

The spelling of 138069677670 in words is "one hundred thirty-eight billion, sixty-nine million, six hundred seventy-seven thousand, six hundred seventy".