133266590785 has 4 divisors (see below), whose sum is σ = 159919908948. Its totient is φ = 106613272624.

The previous prime is 133266590759. The next prime is 133266590867. The reversal of 133266590785 is 587095662331.

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 48874597776 + 84391993009 = 221076^2 + 290503^2 .

It is a cyclic number.

It is not a de Polignac number, because 133266590785 - 2⁷ = 133266590657 is a prime.

It is a Duffinian 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, 13326659074 + ... + 13326659083.

It is an arithmetic number, because the mean of its divisors is an integer number (39979977237).

Almost surely, 2^133266590785 is an apocalyptic number.

It is an amenable number.

133266590785 is a deficient number, since it is larger than the sum of its proper divisors (26653318163).

133266590785 is an equidigital number, since it uses as much as digits as its factorization.

133266590785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26653318162.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 133266590785 in words is "one hundred thirty-three billion, two hundred sixty-six million, five hundred ninety thousand, seven hundred eighty-five".