68153109 has 4 divisors (see below), whose sum is σ = 90870816. Its totient is φ = 45435404.

The previous prime is 68153101. The next prime is 68153123. The reversal of 68153109 is 90135186.

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 not a de Polignac number, because 68153109 - 2³ = 68153101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68153109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68153101) 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, 11358849 + ... + 11358854.

It is an arithmetic number, because the mean of its divisors is an integer number (22717704).

Almost surely, 2^68153109 is an apocalyptic number.

It is an amenable number.

68153109 is a deficient number, since it is larger than the sum of its proper divisors (22717707).

68153109 is a wasteful number, since it uses less digits than its factorization.

68153109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22717706.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 68153109 is about 8255.4896281202. The cubic root of 68153109 is about 408.4716227796.

The spelling of 68153109 in words is "sixty-eight million, one hundred fifty-three thousand, one hundred nine".