68525314891 has 8 divisors (see below), whose sum is σ = 78005101824. Its totient is φ = 59587230120.

The previous prime is 68525314889. The next prime is 68525314939. The reversal of 68525314891 is 19841352586.

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 68525314891 - 2¹ = 68525314889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68525314801) 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, 135425271 + ... + 135425776.

It is an arithmetic number, because the mean of its divisors is an integer number (9750637728).

Almost surely, 2^68525314891 is an apocalyptic number.

68525314891 is a deficient number, since it is larger than the sum of its proper divisors (9479786933).

68525314891 is a wasteful number, since it uses less digits than its factorization.

68525314891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270851081.

The product of its digits is 2073600, while the sum is 52.

The spelling of 68525314891 in words is "sixty-eight billion, five hundred twenty-five million, three hundred fourteen thousand, eight hundred ninety-one".