133538638111860 has 96 divisors (see below), whose sum is σ = 396796473021312. Its totient is φ = 33439923712000.

The previous prime is 133538638111859. The next prime is 133538638111961. The reversal of 133538638111860 is 68111836835331.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 133538638111860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147313641 + ... + 148217360.

It is an arithmetic number, because the mean of its divisors is an integer number (4133296593972).

Almost surely, 2^{133538638111860} is an apocalyptic number.

133538638111860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133538638111860 is an abundant number, since it is smaller than the sum of its proper divisors (263257834909452).

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

133538638111860 is a wasteful number, since it uses less digits than its factorization.

133538638111860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295531473 (or 295531471 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 133538638111860 in words is "one hundred thirty-three trillion, five hundred thirty-eight billion, six hundred thirty-eight million, one hundred eleven thousand, eight hundred sixty".