133678745321 has 8 divisors (see below), whose sum is σ = 150535596288. Its totient is φ = 117605934000.

The previous prime is 133678745273. The next prime is 133678745351. The reversal of 133678745321 is 123547876331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133678745321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133678745321.

It is not an unprimeable number, because it can be changed into a prime (133678745351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196009550 + ... + 196010231.

It is an arithmetic number, because the mean of its divisors is an integer number (18816949536).

Almost surely, 2^133678745321 is an apocalyptic number.

133678745321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133678745321 is a deficient number, since it is larger than the sum of its proper divisors (16856850967).

133678745321 is a wasteful number, since it uses less digits than its factorization.

133678745321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392019823.

The product of its digits is 2540160, while the sum is 50.

The spelling of 133678745321 in words is "one hundred thirty-three billion, six hundred seventy-eight million, seven hundred forty-five thousand, three hundred twenty-one".