133163153507378 has 4 divisors (see below), whose sum is σ = 199744730261070. Its totient is φ = 66581576753688.

The previous prime is 133163153507369. The next prime is 133163153507381. The reversal of 133163153507378 is 873705351361331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73801105833049 + 59362047674329 = 8590757^2 + 7704677^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33290788376843 + ... + 33290788376846.

Almost surely, 2^{133163153507378} is an apocalyptic number.

133163153507378 is a deficient number, since it is larger than the sum of its proper divisors (66581576753692).

133163153507378 is an equidigital number, since it uses as much as digits as its factorization.

133163153507378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66581576753691.

The product of its (nonzero) digits is 14288400, while the sum is 56.

The spelling of 133163153507378 in words is "one hundred thirty-three trillion, one hundred sixty-three billion, one hundred fifty-three million, five hundred seven thousand, three hundred seventy-eight".