68933460157 has 4 divisors (see below), whose sum is σ = 72988369596. Its totient is φ = 64878550720.

The previous prime is 68933460133. The next prime is 68933460179. The reversal of 68933460157 is 75106433986.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37176081721 + 31757378436 = 192811^2 + 178206^2 .

It is a cyclic number.

It is not a de Polignac number, because 68933460157 - 2¹⁵ = 68933427389 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 (68933460107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027454694 + ... + 2027454727.

It is an arithmetic number, because the mean of its divisors is an integer number (18247092399).

Almost surely, 2^68933460157 is an apocalyptic number.

It is an amenable number.

68933460157 is a deficient number, since it is larger than the sum of its proper divisors (4054909439).

68933460157 is a wasteful number, since it uses less digits than its factorization.

68933460157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054909438.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 68933460157 in words is "sixty-eight billion, nine hundred thirty-three million, four hundred sixty thousand, one hundred fifty-seven".