133773808885 has 4 divisors (see below), whose sum is σ = 160528570668. Its totient is φ = 107019047104.

The previous prime is 133773808859. The next prime is 133773808901. The reversal of 133773808885 is 588808377331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48115738609 + 85658070276 = 219353^2 + 292674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133773808885 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 13377380884 + ... + 13377380893.

It is an arithmetic number, because the mean of its divisors is an integer number (40132142667).

Almost surely, 2^133773808885 is an apocalyptic number.

It is an amenable number.

133773808885 is a deficient number, since it is larger than the sum of its proper divisors (26754761783).

133773808885 is an equidigital number, since it uses as much as digits as its factorization.

133773808885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26754761782.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 133773808885 in words is "one hundred thirty-three billion, seven hundred seventy-three million, eight hundred eight thousand, eight hundred eighty-five".