168253028133 has 8 divisors (see below), whose sum is σ = 237533686848. Its totient is φ = 105570527424.

The previous prime is 168253028107. The next prime is 168253028137. The reversal of 168253028133 is 331820352861.

It is a happy number.

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

It is not a de Polignac number, because 168253028133 - 2¹³ = 168253019941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168253028137) 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, 1649539441 + ... + 1649539542.

It is an arithmetic number, because the mean of its divisors is an integer number (29691710856).

Almost surely, 2^168253028133 is an apocalyptic number.

It is an amenable number.

168253028133 is a deficient number, since it is larger than the sum of its proper divisors (69280658715).

168253028133 is a wasteful number, since it uses less digits than its factorization.

168253028133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299079003.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 168253028133 in words is "one hundred sixty-eight billion, two hundred fifty-three million, twenty-eight thousand, one hundred thirty-three".