68431025837 has 4 divisors (see below), whose sum is σ = 72456380316. Its totient is φ = 64405671360.

The previous prime is 68431025813. The next prime is 68431025869. The reversal of 68431025837 is 73852013486.

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 64255152196 + 4175873641 = 253486^2 + 64621^2 .

It is a cyclic number.

It is not a de Polignac number, because 68431025837 - 2¹⁰ = 68431024813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68431025791 and 68431025800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68431022837) 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, 2012677214 + ... + 2012677247.

It is an arithmetic number, because the mean of its divisors is an integer number (18114095079).

Almost surely, 2^68431025837 is an apocalyptic number.

It is an amenable number.

68431025837 is a deficient number, since it is larger than the sum of its proper divisors (4025354479).

68431025837 is a wasteful number, since it uses less digits than its factorization.

68431025837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025354478.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 68431025837 in words is "sixty-eight billion, four hundred thirty-one million, twenty-five thousand, eight hundred thirty-seven".