133568025989 has 4 divisors (see below), whose sum is σ = 133579705824. Its totient is φ = 133556346156.

The previous prime is 133568025967. The next prime is 133568026037. The reversal of 133568025989 is 989520865331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133568025989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133568025959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5822747 + ... + 5845640.

It is an arithmetic number, because the mean of its divisors is an integer number (33394926456).

Almost surely, 2^133568025989 is an apocalyptic number.

It is an amenable number.

133568025989 is a deficient number, since it is larger than the sum of its proper divisors (11679835).

133568025989 is a wasteful number, since it uses less digits than its factorization.

133568025989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679834.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The spelling of 133568025989 in words is "one hundred thirty-three billion, five hundred sixty-eight million, twenty-five thousand, nine hundred eighty-nine".