68101951 has 4 divisors (see below), whose sum is σ = 68144472. Its totient is φ = 68059432.

The previous prime is 68101933. The next prime is 68101961. The reversal of 68101951 is 15910186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15910186 = 2 ⋅7955093.

It is a cyclic number.

It is not a de Polignac number, because 68101951 - 2¹¹ = 68099903 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 (68101931) 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, 18760 + ... + 22093.

It is an arithmetic number, because the mean of its divisors is an integer number (17036118).

Almost surely, 2^68101951 is an apocalyptic number.

68101951 is a deficient number, since it is larger than the sum of its proper divisors (42521).

68101951 is a wasteful number, since it uses less digits than its factorization.

68101951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42520.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 68101951 is about 8252.3906233285. The cubic root of 68101951 is about 408.3693930485.

The spelling of 68101951 in words is "sixty-eight million, one hundred one thousand, nine hundred fifty-one".