133688095979 has 4 divisors (see below), whose sum is σ = 134573447760. Its totient is φ = 132802744200.

The previous prime is 133688095969. The next prime is 133688095987. The reversal of 133688095979 is 979590886331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133688095979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133688095949) 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, 442675664 + ... + 442675965.

It is an arithmetic number, because the mean of its divisors is an integer number (33643361940).

Almost surely, 2^133688095979 is an apocalyptic number.

133688095979 is a deficient number, since it is larger than the sum of its proper divisors (885351781).

133688095979 is an equidigital number, since it uses as much as digits as its factorization.

133688095979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885351780.

The product of its (nonzero) digits is 88179840, while the sum is 68.

The spelling of 133688095979 in words is "one hundred thirty-three billion, six hundred eighty-eight million, ninety-five thousand, nine hundred seventy-nine".