133867537972996 has 27 divisors (see below), whose sum is σ = 238174123408767. Its totient is φ = 65835799878240.

The previous prime is 133867537972979. The next prime is 133867537973009. The reversal of 133867537972996 is 699279735768331.

The square root of 133867537972996 is 11570114.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 50545985584900 + 83321552388096 = 7109570^2 + 9128064^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1411506490 + ... + 1411601326.

Almost surely, 2^{133867537972996} is an apocalyptic number.

133867537972996 is the 11570114-th square number.

It is an amenable number.

133867537972996 is a deficient number, since it is larger than the sum of its proper divisors (104306585435771).

133867537972996 is an frugal number, since it uses more digits than its factorization.

133867537972996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189800 (or 94900 counting only the distinct ones).

The product of its digits is 19443654720, while the sum is 85.

The spelling of 133867537972996 in words is "one hundred thirty-three trillion, eight hundred sixty-seven billion, five hundred thirty-seven million, nine hundred seventy-two thousand, nine hundred ninety-six".