426685727571 has 8 divisors (see below), whose sum is σ = 582144868800. Its totient is φ = 277841869032.

The previous prime is 426685727569. The next prime is 426685727593. The reversal of 426685727571 is 175727586624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 426685727571 - 2¹ = 426685727569 is a prime.

It is a super-2 number, since 2×426685727571² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426685727551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653820521 + ... + 1653820778.

It is an arithmetic number, because the mean of its divisors is an integer number (72768108600).

Almost surely, 2^426685727571 is an apocalyptic number.

426685727571 is a deficient number, since it is larger than the sum of its proper divisors (155459141229).

426685727571 is a wasteful number, since it uses less digits than its factorization.

426685727571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307641345.

The product of its digits is 39513600, while the sum is 60.

The spelling of 426685727571 in words is "four hundred twenty-six billion, six hundred eighty-five million, seven hundred twenty-seven thousand, five hundred seventy-one".