133772791378 has 8 divisors (see below), whose sum is σ = 200816324172. Its totient is φ = 66834016656.

The previous prime is 133772791363. The next prime is 133772791387. The reversal of 133772791378 is 873197277331.

It can be written as a sum of positive squares in 2 ways, for example, as 121227223329 + 12545568049 = 348177^2 + 112007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×133772791378² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26186325 + ... + 26191432.

Almost surely, 2^133772791378 is an apocalyptic number.

133772791378 is a deficient number, since it is larger than the sum of its proper divisors (67043532794).

133772791378 is a wasteful number, since it uses less digits than its factorization.

133772791378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52379036.

The product of its digits is 9335088, while the sum is 58.

The spelling of 133772791378 in words is "one hundred thirty-three billion, seven hundred seventy-two million, seven hundred ninety-one thousand, three hundred seventy-eight".